Oral Foreign Body

Oral foreign body in farm animals refers to the presence of any non-food material lodged within the oral cavity, including the lips, gums, tongue, palate, cheeks, or pharyngeal region. This condition occurs frequently in livestock due to their feeding behaviors, grazing habits, and the environmental conditions in which they are maintained. Foreign objects can range from plant materials such as awns, thorns, and burrs to man-made objects including wire fragments, nails, plastic debris, and baling twine. The severity of the condition depends largely on the type of object, its location within the oral cavity, and the duration it has been present.

Oral foreign bodies affect all livestock species, though certain animals face higher risk based on their feeding behaviors and environmental exposure. Grazing cattle and small ruminants are particularly susceptible due to their relatively indiscriminate grazing habits and the potential for pastures to contain hazardous debris. Pigs, with their rooting behavior, may acquire oral foreign bodies while exploring their environment. Llamas and alpacas grazing in areas with spiny plants or debris face similar risks. The condition is especially common during certain times of year when grass awns mature or when pasture conditions deteriorate, forcing animals to graze closer to the ground where debris accumulates.

The economic and welfare impact of oral foreign bodies in livestock can be substantial, particularly when objects remain undetected or cause secondary complications. Animals with oral foreign bodies typically show reduced feed intake due to pain, leading to weight loss in meat animals and decreased milk production in dairy cattle. Chronic cases may develop secondary infections requiring costly treatment and potentially long withdrawal times from antibiotic therapy. In severe cases, objects may migrate from the oral cavity to cause more serious conditions, or may result in permanent damage requiring culling of the affected animal. The welfare implications are significant, as oral pain substantially reduces quality of life and normal behavioral expression.

Early detection and prompt treatment of oral foreign bodies is crucial for optimal outcomes. When identified quickly, most oral foreign bodies can be removed with minimal complications, allowing rapid return to normal function. Delayed treatment increases the risk of infection, tissue damage, abscess formation, and potential migration of objects to more dangerous locations. Producers who regularly observe their animals during feeding and quickly investigate signs of oral discomfort can identify foreign body problems before serious complications develop. Understanding the risk factors and common presentations of oral foreign bodies enables more effective prevention and timely intervention.

The primary causes of oral foreign bodies in farm animals relate directly to feeding behaviors and environmental exposure. Grazing animals inadvertently consume foreign materials present in pastures, including wire fragments from old fencing, nails or screws from deteriorated structures, pieces of broken machinery, and accumulated debris from human activity. Plant-based foreign bodies, including grass awns, foxtails, porcupine grass, and thorns from various shrubs, become embedded in oral tissues during normal grazing. Animals fed hay or silage may encounter baling twine fragments, wire ties, or other materials used in feed preparation and storage. Curious exploration of the environment, particularly in younger animals, leads to mouthing of inappropriate objects that may become lodged in the oral cavity.

While genetic predisposition plays minimal direct role in oral foreign body acquisition, certain anatomical variations may increase susceptibility to complications. Animals with abnormal dental conformation may be more prone to trapping foreign material between teeth or in gingival pockets. Breeds with loose, pendulous lips may more easily acquire debris during grazing. Animals with oral abnormalities from previous injury or disease may have tissue changes that increase foreign body retention. Young animals undergoing tooth eruption may have gum tissue more susceptible to penetration by sharp objects. These individual variations influence both the likelihood of foreign body lodgment and the difficulty of detection and removal.

Environmental and management factors significantly influence oral foreign body risk in livestock populations. Pastures with old fencing, deteriorating structures, or accumulations of human debris present ongoing hazards. Overgrazed pastures force animals to graze closer to the ground where debris accumulates and where grass awns are more concentrated. Feeding areas where animals crowd together to access limited resources may contain increased debris from equipment and human activity. Hay fields harvested late in the season when grass awns have fully developed produce forage with higher foreign body risk. Feed storage and handling practices that fail to exclude debris introduce potential foreign bodies into the diet.

Several risk factors increase the likelihood of oral foreign body problems in individual animals. Younger animals, with their natural curiosity and tendency to explore by mouthing objects, face elevated risk. Animals with visual impairment may fail to detect hazards during grazing. Hungry animals consuming feed rapidly may be less discriminating about what they ingest. Competition for limited feed resources leads to rapid, less selective eating. Animals recovering from illness may have reduced sensory function affecting their ability to detect and reject foreign material. Environmental stress factors including extreme weather may alter grazing behavior in ways that increase exposure to hazards.

The pathophysiology of oral foreign body injury involves mechanical trauma to oral tissues, followed by inflammatory response and potential infection. Sharp objects penetrate epithelial surfaces, creating wounds that allow bacterial invasion. Blunt objects may cause crushing injury and pressure necrosis. Embedded objects trigger foreign body reactions with chronic inflammation and granulation tissue formation. Objects that penetrate deeply may damage blood vessels, nerves, or salivary glands. The oral cavity's rich bacterial flora means that any wound rapidly becomes contaminated, and without removal of the foreign material and appropriate treatment, infection progresses and may spread to surrounding tissues.

Early warning signs of oral foreign bodies in farm animals often manifest as subtle behavioral changes that attentive producers can detect. Animals may show sudden reluctance to eat or drink, particularly if the foreign body causes pain with mouth movement. Increased salivation, sometimes with blood-tinged drool, indicates oral irritation or injury. Head shaking or repeated opening and closing of the mouth suggests the animal is attempting to dislodge an uncomfortable object. Animals may be seen rubbing their faces against fences, posts, or other objects. Sudden change in chewing pattern, including favoring one side of the mouth or making exaggerated jaw movements, indicates unilateral oral discomfort.

Symptoms vary by species based on anatomical differences and behavioral responses to oral discomfort. Cattle with oral foreign bodies often exhibit profuse drooling with foam accumulation around the muzzle, accompanied by extended tongue movements as they attempt to manipulate the object. Affected cattle may bellow abnormally or show complete reluctance to vocalize. Sheep and goats display teeth grinding, extended periods with mouths partially open, and excessive lip smacking. These small ruminants may paw at their faces or shake their heads repeatedly. Swine with oral foreign bodies frequently become aggressive when approached near the head, refuse feed entirely, and may produce unusual vocalizations indicating distress.

Behavioral changes associated with oral foreign bodies extend beyond immediate signs of oral discomfort. Affected animals often separate themselves from the herd, avoiding normal social interactions and feeding competition. Water intake may increase dramatically as animals attempt to flush the oral cavity, or may decrease if drinking causes pain. Animals may stand with their heads lowered or extended in unusual postures. Decreased activity and increased time spent lying down reflect general malaise from pain and reduced nutritional intake. Previously docile animals may become difficult to handle, particularly resisting any attempt to examine the head or mouth area.

Physical signs of oral foreign bodies depend on the object's nature and location. Visible swelling of the lips, cheeks, or submandibular area indicates inflammation or abscess formation. External wounds or draining tracts may develop when objects penetrate through oral tissues. Fetid breath odor suggests tissue necrosis or infection. The tongue may appear swollen, discolored, or held in an abnormal position. Examination of the oral cavity may reveal the foreign object directly, or may show wounds, granulation tissue, or abscess formation at the site of lodgment. Regional lymph nodes may be enlarged and painful on palpation.

Symptom progression without treatment follows a predictable course of increasing severity. Initial acute signs of pain and drooling may temporarily improve as inflammatory tissue surrounds the foreign body, but this represents false improvement rather than resolution. Chronic foreign bodies lead to progressive weight loss as feed intake remains compromised. Secondary infection develops and spreads, potentially forming abscesses that may eventually rupture externally. Chronic inflammation may cause permanent tissue damage and scarring. Some objects, particularly metallic ones in cattle, may migrate from the oral cavity toward the pharynx, esophagus, or even thorax, causing progressively more serious complications.

Emergency symptoms requiring immediate veterinary intervention include severe respiratory distress suggesting pharyngeal obstruction or aspiration. Profuse hemorrhage from the mouth indicates damage to major blood vessels. Complete inability to swallow, with regurgitation of water and accumulated saliva, suggests obstruction or severe pharyngeal damage. High fever accompanied by severe depression indicates systemic infection potentially progressing to sepsis. Visible wounds with exposed bone or deep tissue involvement require urgent surgical attention. Any sign of hardware disease in cattle, including arched back, reluctance to move, and painful grunt on movement, requires immediate evaluation as the foreign body may have migrated beyond the oral cavity.

Clinical examination for suspected oral foreign body begins with careful observation of the animal's behavior and general condition before physical manipulation. The examiner notes salivation characteristics, breathing pattern, head position, and response to visual examination of the external oral region. Physical examination proceeds methodically, beginning with palpation of the external jaw and throat region to detect swelling, heat, or pain. The lips and external oral tissues are examined for wounds or swelling. With appropriate restraint, the oral cavity is carefully examined using adequate lighting and, when necessary, a mouth speculum to allow visualization of the tongue, gums, dental arcades, palate, and pharyngeal region. Systematic examination ensures no areas are overlooked.

Diagnostic tests support clinical examination and help characterize the extent of injury. Radiography is valuable for detecting metallic foreign bodies, with lateral and ventrodorsal views of the head and neck region providing complementary information. Ultrasonography helps evaluate soft tissue swelling, abscess formation, and the location of non-metallic objects. In valuable animals, computed tomography or MRI may be justified to precisely locate foreign material and assess tissue damage. Blood work including complete blood count and serum chemistry helps evaluate systemic effects of chronic foreign bodies and guides treatment planning. Bacterial culture from wound sites or abscess contents identifies pathogens and guides antimicrobial selection.

Differential diagnosis for oral foreign body includes various conditions producing similar clinical signs. Dental disease including tooth root abscesses, fractured teeth, or severe periodontal disease causes oral pain and drooling. Oral neoplasia may present with swelling, drooling, and eating difficulty. Viral diseases causing oral lesions, including foot-and-mouth disease, bluetongue, and bovine viral diarrhea, require differentiation particularly when multiple animals are affected. Neurological conditions affecting swallowing or tongue function may mimic foreign body symptoms. Actinomycosis and actinobacillosis cause oral and facial swelling that might initially suggest foreign body abscessation. Rabies must be considered in animals with unusual oral symptoms and behavioral changes.

Herd-level diagnostics become relevant when multiple animals present with oral foreign body problems within a short timeframe. Environmental assessment of pastures, feeding areas, and water sources identifies hazards requiring correction. Examination of feed sources for contamination with wire, plastic, or other debris may reveal the source of problems. Review of recent management activities including fencing work, construction, or equipment repairs may identify when and how debris was introduced. Evaluation of hay or silage from specific cuttings or suppliers helps determine if feed is the contamination source. Systematic investigation and documentation supports prevention of future incidents and may have implications for supplier accountability or insurance claims.

Emergency and immediate treatment for oral foreign bodies focuses on stabilization and preparation for object removal. Animals in respiratory distress from pharyngeal obstruction require immediate intervention, potentially including emergency tracheostomy if complete obstruction is present. Profuse hemorrhage requires direct pressure where possible and preparation for surgical control of bleeding vessels. Severely dehydrated animals need fluid therapy before anesthesia for foreign body removal. Pain management with appropriate analgesics improves animal welfare and facilitates examination and treatment. Animals are typically held off feed before sedation or anesthesia but should have access to water unless swallowing is compromised.

Medical management accompanies and follows foreign body removal. Antimicrobial therapy is indicated for most cases given the contaminated nature of oral wounds, with drug selection based on culture results when available or empirical coverage of common oral pathogens. Tetanus prophylaxis is essential for species susceptible to this disease. Anti-inflammatory medications reduce pain and swelling, supporting recovery. Oral antiseptic rinses or gels may be applied to wound sites. When foreign body removal is delayed, medical management helps control infection and inflammation while awaiting definitive treatment. All medications used in food-producing animals must be tracked carefully with strict attention to withdrawal times for meat and milk.

Surgical removal is the definitive treatment for most oral foreign bodies. Simple extractions of superficially lodged objects may be accomplished with manual restraint or light sedation, using appropriate forceps or hemostats to grasp and remove the material. Deeply embedded objects require more extensive surgical approach, potentially under general anesthesia, with careful dissection to expose and remove the foreign material without causing additional tissue damage. Abscess cavities are thoroughly lavaged and may be left open to drain or closed with drainage tubes. Wounds are assessed for the need for suturing, with many oral wounds healing well by second intention due to the excellent blood supply. Post-surgical care includes continued antimicrobial therapy and supportive nutrition.

Supportive care is essential throughout treatment and recovery from oral foreign bodies. Dietary modification to provide soft, easily consumed feeds reduces oral trauma during healing. Gruel or slurry feeds may be necessary for animals with severe oral wounds or those recovering from extensive surgery. Fresh, clean water must be freely available to support hydration and natural oral rinsing. Animals should be housed separately from aggressive herd mates to reduce competition for feed and risk of additional injury. Environmental modifications to provide soft bedding and protection from temperature extremes support overall recovery. Nutritional supplementation may be needed for animals with prolonged reduced feed intake.

Herd treatment protocols address prevention when multiple animals are affected. Immediate removal of hazards from pastures, feeding areas, and water sources prevents additional cases. Feed supplies suspected of contamination are quarantined pending evaluation. Magnetic feeders or magnets placed in ruminant reticuli help capture metallic foreign bodies before they cause oral injury or hardware disease. Hay and feed inspection protocols are implemented or enhanced. Staff training emphasizes recognition of foreign body signs and importance of prompt reporting. Documentation of all cases supports analysis of patterns and effectiveness of preventive measures.

Treatment decisions in commercial livestock operations balance animal welfare against economic considerations. For valuable breeding animals, aggressive diagnostic workup and treatment including advanced imaging and referral surgery may be justified. Commercial animals are evaluated based on treatment costs, likelihood of full recovery, and lost production during treatment and withdrawal periods. Animals with extensive tissue damage or objects that cannot be safely removed may require euthanasia on welfare grounds. Chronic cases that fail to resolve despite treatment may similarly require culling decisions. Producers should establish relationships with veterinarians experienced in livestock oral surgery to ensure access to expertise when needed.

Recovery timeline for oral foreign body cases varies widely based on object type, location, duration of presence, and extent of tissue damage. Simple foreign bodies removed promptly before significant tissue damage occurs may allow return to normal eating within 24 to 48 hours. Cases with established infection or abscess formation typically require one to three weeks for wound healing, with antibiotic therapy continuing throughout this period. Extensive surgical cases with significant tissue reconstruction may require four to six weeks for complete healing. Animals that developed systemic illness from chronic foreign bodies face prolonged recovery periods and may require ongoing supportive care and monitoring.

Post-treatment care and monitoring ensure complete healing and early detection of complications. Surgical sites are examined daily for the first week, then less frequently as healing progresses, watching for signs of infection, wound breakdown, or continued drainage suggesting retained foreign material. Feed intake and water consumption are monitored to verify the animal is eating comfortably. Body weight or condition scoring at regular intervals confirms that nutritional status is recovering appropriately. Behavioral observation ensures the animal is returning to normal herd interactions and activity levels. Any return of initial symptoms prompts immediate re-evaluation for retained foreign material or secondary complications.

Prognosis for oral foreign body cases depends on multiple factors assessed at the time of diagnosis and during treatment. Objects removed completely before significant tissue damage carries excellent prognosis for full recovery. Deeper objects with established infection have good prognosis with appropriate surgical and medical treatment, though some animals retain minor scarring or tissue changes. Chronic cases with extensive tissue destruction may have guarded prognosis for return to full function. Objects that have caused damage to major structures including the tongue, major blood vessels, or salivary glands carry more guarded prognosis. Migration of objects beyond the oral cavity, particularly in cattle where hardware disease may develop, significantly worsens prognosis.

Return to production considerations guide management decisions during recovery. Dairy animals can typically resume milking once acute illness has resolved, though milk may be withheld during antibiotic withdrawal periods. Return to normal milk production depends on nutritional recovery and may take several weeks to reach pre-illness levels. Meat animals should demonstrate resumed weight gain before marketing. Animals treated with antibiotics must complete full withdrawal periods, documented carefully to ensure food safety. Breeding animals may return to normal reproductive function once recovered, though severely debilitated animals benefit from recovery time before breeding challenges. Producers should maintain records documenting treatment, withdrawal dates, and return to production status.

Vaccination protocols do not directly prevent oral foreign body acquisition, as this is a physical hazard rather than an infectious disease. However, maintaining current tetanus vaccination in susceptible species is essential since oral wounds are highly susceptible to tetanus contamination. Clostridial vaccination programs support overall health and recovery capacity. Vaccination against diseases that might cause oral lesions or alter grazing behavior indirectly reduces risk by maintaining normal feeding patterns. Producers should work with veterinarians to maintain comprehensive vaccination programs that support overall herd health and disease resistance.

Biosecurity measures for oral foreign body prevention focus on environmental management rather than traditional infectious disease control. Regular inspection of pastures for hazardous debris, including wire fragments, nails, broken equipment, and accumulated trash, removes potential foreign bodies before animals encounter them. Fencing installation and maintenance protocols should include collection of wire fragments, staples, and nails. Feeding areas are kept clear of debris, with broken equipment repaired or removed promptly. Gates and handling facilities are inspected for sharp edges or protruding objects. When construction or repair work is performed in animal areas, careful cleanup ensures no hazardous materials remain. Water sources are protected from debris accumulation.

Nutritional prevention of oral foreign bodies relates primarily to feed management practices. Hay fields are inspected before cutting to remove wire, posts, and debris that might be incorporated into bales. Baling twine and wire are removed completely and disposed of properly, away from animal access. Feed is stored in clean facilities protected from debris contamination. Feed delivery systems are maintained to prevent incorporation of broken parts into the feed stream. Animals are fed adequate quantities to prevent aggressive competition and rushed eating that reduces selectivity. Pasture management maintains adequate forage height and quality so animals are not forced to graze close to the ground where debris accumulates.

Management practices that prevent oral foreign bodies include attention to grazing behavior and environmental hazards. Rotational grazing prevents overgrazing that forces animals into marginal areas with higher debris risk. Pastures known to contain hazardous debris are fenced off until cleanup can be completed. Periods of high grass awn development may warrant restricting access to affected pastures or providing supplemental feed. Metal detectors may be employed in operations where contamination risk is high. Regular observation of grazing animals helps identify areas where animals seem reluctant to graze, potentially indicating recognized hazards. New pastures or rented ground should be thoroughly inspected before introducing animals.

Quarantine and testing protocols have limited direct application to oral foreign body prevention, but general health monitoring practices support early detection. New animals should be observed carefully during their initial period in a new environment, as unfamiliarity with local hazards may increase risk. Animals returning from shows, sales, or other venues are observed for oral problems that might have been acquired away from home. Regular health monitoring including oral examination during routine handling allows early detection of problems. Documentation of all foreign body cases helps identify patterns related to specific locations, seasons, or management practices, supporting targeted prevention efforts.

Daily management and monitoring for livestock at risk of oral foreign bodies requires attention to behavioral indicators of oral discomfort. Caretakers observe animals during feeding to identify individuals showing eating difficulties, including slow consumption, dropping feed, or favoring one side of the mouth. Excessive salivation or drooling is noted and investigated promptly. Animals seen rubbing their faces or shaking their heads repeatedly are examined for oral problems. Regular visual assessment of the face and mouth region during routine handling helps identify swelling or wounds. Any animal showing sudden decrease in feed intake warrants close evaluation including oral examination. Documentation of observations supports pattern recognition and early intervention.

Housing and environmental management significantly influence oral foreign body risk. Feeding areas are designed and maintained to minimize debris accumulation, with regular cleaning to remove potential hazards. Feed bunks and troughs are positioned away from sources of contamination such as equipment storage or work areas. Fencing in feeding areas uses materials less likely to produce dangerous fragments, with smooth wire or board fencing preferred over barbed wire in high-traffic areas. Water sources are protected from debris and cleaned regularly. Pasture maintenance includes regular inspection and removal of hazardous materials. Gates and handling facilities are checked for sharp edges or protruding fasteners that could cause oral injury.

Herd health programs incorporating oral health awareness support prevention and early detection. Staff training emphasizes recognition of oral foreign body signs and importance of prompt reporting. Regular oral examinations are included in herd health visits, with dental and oral health status documented. Protocols are established for environmental inspection frequency and responsible parties. Feed delivery and storage procedures include specific attention to debris prevention. Documentation systems track all foreign body cases, allowing analysis of patterns and effectiveness of preventive measures. Emergency protocols ensure appropriate supplies and veterinary contacts are available for urgent cases.

Record keeping and monitoring systems provide foundation for effective foreign body prevention and management. Individual animal records document any history of oral foreign bodies, complications, and treatments. Environmental inspection logs track findings and corrective actions. Feed records include supplier information and any quality concerns. Maps of pastures and facilities mark locations where hazards have been found or cases have occurred, guiding ongoing monitoring efforts. Treatment records for any foreign body cases include medications, withdrawal dates, and outcomes. Regular review of records helps identify trends, seasonal patterns, and areas requiring enhanced attention.

Economic considerations shape oral foreign body prevention and treatment strategies. Investment in environmental cleanup and hazard removal is evaluated against potential costs of foreign body cases including treatment expenses, lost production, and potential animal loss. Feed supplier selection may consider contamination history and quality control practices alongside price. Treatment decisions for affected animals balance treatment costs against animal value and expected outcomes. Insurance coverage for livestock may influence investment in prevention versus acceptance of treatment costs. Labor allocation for environmental inspection and maintenance must be justified against other operational priorities. Producers should evaluate the overall cost-effectiveness of their foreign body prevention program and adjust as needed to achieve acceptable risk levels.

High-risk breeds and species for oral foreign bodies are primarily determined by feeding behaviors and environmental exposure rather than genetic factors. Cattle, particularly beef breeds maintained on extensive grazing systems, face elevated risk due to their relatively indiscriminate grazing habits and wide-ranging behavior that increases exposure to environmental hazards. Sheep and goats grazing in areas with thorny vegetation or accumulated debris experience higher foreign body rates. Pigs with access to outdoor areas or deep bedding may acquire oral foreign bodies through rooting behavior. Llamas and alpacas in brushy pastures or areas with spiny plants face increased risk. Animals of any breed maintained in poorly managed environments with accumulated debris face elevated foreign body risk regardless of their specific breed characteristics.

Production type considerations influence oral foreign body risk through management differences. Feedlot cattle fed processed rations face different risks than grazing cattle, with potential foreign bodies coming from feed processing equipment or storage facilities rather than pasture debris. Dairy cattle housed in confinement may encounter hazards related to facility maintenance and equipment. Extensive grazing operations face continuous environmental hazard exposure requiring ongoing pasture management. Hay-fed animals face risks associated with hay production and storage practices. Show animals frequently handled and transported may encounter hazards at various venues. Production intensity influences the time available for environmental management and monitoring, potentially affecting foreign body risk.

Genetic selection and testing have limited application to oral foreign body prevention, as the condition results from environmental exposure rather than heritable factors. However, selection for docile temperament may indirectly reduce risk by facilitating regular handling and examination that enables early foreign body detection. Animals with good conformation and sound oral structure may be better able to reject foreign material during eating. Breeding stock selection should consider overall health and vigor that supports recovery if foreign bodies are acquired. Documentation of foreign body cases in breeding records helps identify any animals with repeated problems that might suggest behavioral tendencies increasing exposure or anatomical factors affecting foreign body retention.

Commonly co-occurring conditions with oral foreign bodies include infections and inflammatory processes that develop secondary to tissue penetration. Actinomycosis (lumpy jaw) in cattle can develop when foreign body wounds allow Actinomyces bovis to enter bone tissue, leading to characteristic bony swelling. Actinobacillosis (wooden tongue) may follow tongue injuries from foreign bodies. Oral and pharyngeal abscesses frequently complicate retained foreign bodies. Hardware disease in cattle may occur when metallic foreign bodies pass from the oral cavity through the esophagus to the reticulum and penetrate the diaphragm toward the heart. Aspiration pneumonia may develop if foreign bodies or infected material enter the airway. Local cellulitis and spreading soft tissue infection can follow oral foreign body wounds.

Conditions with similar symptoms to oral foreign bodies require careful differentiation for appropriate treatment. Dental disease including tooth root abscesses and fractured teeth presents with drooling, head shyness, and eating difficulties similar to foreign body cases. Oral neoplasia may cause progressive swelling and eating difficulty. Viral diseases including foot-and-mouth disease, vesicular stomatitis, bluetongue, and bovine viral diarrhea cause oral lesions and salivation. Stomatitis from various causes produces oral inflammation that might be confused with foreign body injury. Rabies should be considered in animals with unusual oral symptoms and behavioral changes. Neurological conditions affecting the tongue or swallowing mechanism may mimic foreign body obstruction. Esophageal obstruction (choke) causes salivation and distress that might initially suggest oral foreign body.

Complications and sequelae of oral foreign bodies include immediate and long-term problems following the initial injury. Local tissue damage may result in scarring and permanent changes to oral structures. Damage to salivary glands or ducts may cause abnormal salivation or salivary cysts. Tongue injuries may affect prehension and manipulation of feed. Chronic infection may develop osteomyelitis of jaw bones. Foreign body migration, particularly of metallic objects in cattle, can cause life-threatening hardware disease. Aspiration of foreign material or infected debris may cause pneumonia. Chronic pain from unresolved foreign bodies leads to progressive weight loss and production decline. Some animals develop behavioral changes, becoming head-shy or difficult to handle due to chronic oral discomfort or memories of painful procedures.