Arteriosclerosis / Atherosclerosis

Arteriosclerosis and atherosclerosis are progressive degenerative conditions affecting the arterial blood vessels in rabbits. Arteriosclerosis refers broadly to the thickening and hardening of arterial walls, while atherosclerosis specifically describes the accumulation of fatty deposits, cholesterol, and other substances forming plaques within arterial walls. These conditions restrict blood flow and reduce arterial elasticity, potentially leading to serious cardiovascular complications. Rabbits have historically served as important research models for atherosclerosis due to their susceptibility to developing the condition, particularly when fed cholesterol-rich diets.

The development of arterial disease in rabbits relates to dietary factors, genetic susceptibility, and age-related changes in blood vessel structure and function. Unlike humans where atherosclerosis develops over decades, rabbits can develop significant arterial changes relatively quickly when predisposing factors are present. The condition affects arteries throughout the body, with particular concern for coronary arteries supplying the heart, cerebral arteries supplying the brain, and aorta distributing blood from the heart. Pet rabbits fed inappropriate diets high in fats and simple carbohydrates, or those who become obese, face elevated risk for developing arterial disease.

The impact of arteriosclerosis and atherosclerosis on rabbit health can be significant, particularly as disease progresses. Early disease may cause no obvious symptoms, as rabbits typically hide signs of illness until conditions become advanced. Progressive arterial narrowing reduces blood flow to vital organs, potentially causing tissue damage, organ dysfunction, or acute events such as stroke or heart attack. Reduced cardiovascular efficiency affects exercise tolerance, energy levels, and overall vitality. As with any condition causing discomfort or reduced wellbeing in rabbits, secondary gastrointestinal complications including stasis may develop and require prompt attention.

Treatment for arterial disease in rabbits focuses on management rather than cure, as established plaques and arterial changes cannot be fully reversed. Dietary modification, weight management, and lifestyle optimization form the foundation of treatment. Medical interventions may be considered in some cases. Early detection and intervention provide the best opportunity to slow disease progression and maintain quality of life. Working with a rabbit-savvy veterinarian is essential for proper diagnosis and management, as cardiovascular disease in rabbits requires specialized knowledge for appropriate assessment and treatment planning.

The primary causes of arteriosclerosis and atherosclerosis in rabbits relate to dietary factors and metabolic disturbances that promote arterial damage and plaque formation. Diets high in fat, particularly saturated fats and cholesterol, directly contribute to lipid accumulation in arterial walls. Rabbits are naturally herbivores whose digestive systems evolved to process high-fiber plant materials, not fatty foods. When fed inappropriate diets including excessive commercial treats, seeds, nuts, or human foods high in fats and sugars, rabbits develop elevated blood lipid levels that promote atherosclerotic changes. The dietary link to arterial disease in rabbits is so reliable that researchers have used dietary manipulation in rabbits to study atherosclerosis for over a century.

Genetic and hereditary factors influence individual susceptibility to arterial disease. Some rabbit strains demonstrate increased susceptibility to developing atherosclerosis even on similar diets, suggesting genetic variation in lipid metabolism, arterial wall characteristics, or inflammatory responses. Certain breeds may have predispositions to cardiovascular conditions, though comprehensive breed-specific studies for arterial disease are limited in pet rabbit populations. Individual variation in how efficiently rabbits process dietary lipids affects their risk profile. Family history, when known, may provide insight into genetic susceptibility.

Environmental and lifestyle factors significantly influence arterial disease development. Sedentary lifestyle with limited exercise promotes obesity and poor cardiovascular conditioning. Inadequate housing that restricts movement compounds this risk. Chronic stress, which can affect lipid metabolism and inflammatory processes, may contribute to arterial changes. Poor husbandry including inappropriate diet composition, irregular feeding schedules, or inadequate water availability affects overall metabolic health. Indoor rabbits with limited space for exercise may face higher risk than those with adequate room for physical activity.

Risk factors for arteriosclerosis and atherosclerosis include advanced age, obesity, inappropriate diet, sedentary lifestyle, and chronic inflammatory conditions. Senior rabbits naturally experience age-related arterial changes that increase susceptibility to degenerative disease. Obese rabbits face dramatically elevated risk due to disturbed lipid metabolism and chronic metabolic stress. Concurrent conditions such as diabetes or metabolic syndrome, though less well-characterized in rabbits than in humans, may contribute to arterial disease. Female rabbits, particularly intact females with hormonal influences, may have different risk profiles than males, though data specific to pet rabbits is limited.

The mechanism of arterial disease development involves progressive damage to arterial walls and accumulation of lipid-rich plaques. Initial damage to the endothelium (arterial lining) allows lipid particles to penetrate the arterial wall. Inflammatory cells migrate to these areas, engulfing lipids and becoming foam cells. Over time, these accumulations form fatty streaks, then progress to fibrous plaques containing lipid cores covered by fibrous caps. Advanced plaques may calcify, causing arteriosclerotic hardening. Plaques narrow the arterial lumen, reducing blood flow, and can rupture causing acute thrombosis. The process typically progresses over months to years depending on risk factor severity.

Early warning signs of arteriosclerosis and atherosclerosis in rabbits are typically subtle or absent, making detection challenging. Rabbits instinctively hide signs of weakness or illness, and early cardiovascular disease may cause no obvious behavioral changes. Owners might notice gradually decreased activity levels or slight reduction in exercise enthusiasm. Mild exercise intolerance, where the rabbit tires more quickly during playtime, may occur. Subtle changes in breathing pattern during or after activity might be observed by attentive owners. Because these signs are nonspecific and develop gradually, early arterial disease frequently goes unrecognized until more significant symptoms appear.

Common symptoms develop as arterial disease progresses and blood flow to organs becomes significantly compromised. Decreased energy and lethargy reflect reduced cardiovascular efficiency. Exercise intolerance becomes more pronounced, with rabbits showing obvious fatigue, heavy breathing, or reluctance to engage in normal activities. Weight changes may occur, with some rabbits gaining weight due to decreased activity while others may lose weight from poor circulation and metabolic changes. Changes in appetite or eating patterns sometimes develop. Coat quality may deteriorate, appearing duller or less well-maintained as overall health declines.

Behavioral changes associated with cardiovascular disease reflect both reduced physical capacity and potential discomfort. Affected rabbits may become quieter and less interactive, spending more time resting. Reluctance to exercise, play, or explore indicates reduced physical capacity or discomfort during exertion. The rabbit may seek quiet, comfortable spots more frequently. Changes in grooming behavior, either excessive or decreased, sometimes occur. Social interactions with bonded companions or human family members may decrease. Any reduction in eating is concerning in rabbits, as continuous gut function is essential to health.

Physical signs during examination may reveal cardiovascular abnormalities to an experienced veterinarian. Heart murmurs or abnormal heart sounds may be detected on auscultation. Irregular heart rhythms can occur with advanced disease. Increased respiratory rate or effort at rest suggests compromised cardiovascular function. Pale or bluish mucous membranes indicate poor oxygenation. Weak or irregular pulses may be detected. Fluid accumulation (edema) in the limbs or abdomen occasionally develops with heart failure. Cold extremities suggest poor peripheral circulation. Overall body condition assessment may reveal the obesity that contributed to disease development.

Symptom progression in arterial disease typically follows a gradual worsening course over months to years. Mild early symptoms progress to more obvious exercise intolerance and reduced vitality. Chronic reduced blood flow to organs causes progressive dysfunction. Advanced disease may cause acute events including stroke, which can present as sudden weakness, head tilt, paralysis, or collapse, or heart attack, which may cause acute distress, collapse, or sudden death. The timeline of progression varies considerably based on disease severity, ongoing risk factors, and whether interventions are implemented. Some rabbits remain relatively stable for extended periods while others progress more rapidly.

Emergency symptoms requiring immediate veterinary care include sudden collapse, which may indicate stroke, heart attack, or acute cardiac arrhythmia. Severe breathing difficulty or labored breathing at rest suggests acute cardiac decompensation or respiratory compromise. Blue-tinged or very pale gums indicate severe oxygenation problems. Sudden paralysis or severe weakness, particularly affecting one side of the body, may indicate stroke. Any rabbit that stops eating for more than twelve hours faces a medical emergency regardless of the underlying cause, as gastrointestinal stasis can develop rapidly. Open-mouth breathing in a rabbit is always a dire emergency. Loss of consciousness or severe disorientation requires immediate emergency care.

Initial veterinary examination for suspected cardiovascular disease involves comprehensive assessment by a rabbit-savvy veterinarian. The veterinarian will obtain detailed history including diet, housing, exercise opportunities, age, and any observed changes in behavior or condition. Physical examination includes careful cardiac auscultation listening for murmurs, abnormal sounds, or rhythm irregularities. Respiratory rate and effort are assessed. Mucous membrane color and capillary refill time indicate peripheral circulation. Pulse quality and regularity are evaluated. Body condition scoring assesses obesity that may have contributed to disease. Overall physical examination identifies any concurrent conditions. The importance of rabbit-specific expertise cannot be overstated, as normal vital parameters and examination findings differ from other species.

Diagnostic testing for arterial disease typically includes blood work and cardiac imaging. Complete blood count assesses overall health and may reveal anemia or other abnormalities. Biochemistry panel evaluates organ function including liver and kidneys, which may be affected by poor perfusion. Lipid panel measuring cholesterol and triglycerides helps confirm hyperlipidemia contributing to arterial disease. Blood glucose assessment screens for concurrent metabolic issues. Electrocardiogram (ECG) evaluates heart rhythm and can detect arrhythmias or conduction abnormalities. Radiographs (X-rays) of the chest assess heart size and look for signs of heart enlargement or fluid accumulation.

Advanced imaging provides detailed assessment of cardiovascular structures. Echocardiography (cardiac ultrasound) allows visualization of heart chambers, valves, and heart muscle function, assessing for secondary cardiac effects of arterial disease. Doppler studies can evaluate blood flow patterns. CT angiography, while not commonly available for rabbits, can provide detailed imaging of major blood vessels in specialized facilities. Ultrasound of the abdominal aorta may reveal atherosclerotic changes. The specific testing performed depends on clinical presentation, available equipment, and the rabbit's tolerance for procedures.

Differential diagnosis for symptoms of cardiovascular disease includes several conditions that may present similarly. Primary cardiomyopathy (disease of the heart muscle itself) causes similar symptoms and may coexist with arterial disease. Respiratory disease causes breathing difficulty that may be confused with cardiac origin. Anemia from various causes reduces oxygen delivery and causes similar lethargy and exercise intolerance. Obesity alone, without arterial disease, causes reduced activity and exercise intolerance. Neurological conditions may cause some overlapping symptoms. Cancer affecting the heart or mediastinum can cause cardiovascular symptoms. Accurate differentiation guides appropriate treatment and helps establish prognosis.

Emergency treatment for acute cardiovascular events focuses on stabilization and supportive care. Oxygen supplementation is critical for rabbits in respiratory distress. Fluid therapy supports circulation, though must be carefully administered to avoid overloading a compromised heart. Pain management with rabbit-safe medications such as meloxicam addresses discomfort. If the rabbit has stopped eating, immediate intervention to prevent gastrointestinal stasis is essential. Emergency cardiac medications may be administered based on specific presentation. Stabilization typically takes priority before diagnostic procedures that might stress an already compromised patient. Prognosis for acute cardiovascular events in rabbits is often guarded.

Medical management of chronic arterial disease aims to reduce risk factors, slow progression, and manage symptoms. Cardiac medications may be prescribed based on specific findings. ACE inhibitors such as enalapril or benazepril are sometimes used to reduce cardiac workload. Beta-blockers or calcium channel blockers may address specific arrhythmias or reduce cardiac demands. Diuretics such as furosemide may be prescribed if fluid accumulation develops. Medications to reduce blood lipids have been studied in rabbits but are not routinely used in clinical settings. All medications must be dosed appropriately for rabbits, and many drugs used in dogs and cats require dose adjustment or are not appropriate for rabbits.

Dietary management forms a cornerstone of treatment for arterial disease. Transition to an appropriate rabbit diet is essential if the current diet is inappropriate. Unlimited grass hay should comprise at least eighty percent of the diet, providing essential fiber and negligible fat. Fresh leafy greens daily provide nutrition without excess calories. Commercial pellets should be limited to appropriate amounts for body size, and high-quality pellets with minimal added ingredients are preferred. All high-fat treats including seeds, nuts, and fatty commercial treats must be eliminated. Human foods, particularly those high in fats, sugars, or starches, are not appropriate for rabbits. Gradual dietary transition helps prevent gastrointestinal upset.

Weight management is critical for obese rabbits with arterial disease. Gradual weight loss through diet modification and increased exercise reduces metabolic stress and improves cardiovascular function. Weight loss must be achieved slowly in rabbits to avoid hepatic lipidosis (fatty liver disease), which can develop if food intake decreases too rapidly. Working with a veterinarian to establish appropriate calorie intake ensures safe weight loss. Monitoring weight weekly tracks progress. Exercise should be encouraged through safe, stimulating environments that motivate movement. Enrichment activities that encourage natural behaviors increase physical activity.

Lifestyle modifications support overall cardiovascular health and disease management. Providing adequate space for regular exercise allows physical conditioning. Safe outdoor time in protected areas (weather permitting) provides enrichment and exercise opportunities. Reducing stress through appropriate housing, consistent routines, and proper handling supports overall health. Temperature regulation is important, as both heat stress and cold stress burden the cardiovascular system. Social needs should be met through bonded companions or regular human interaction. Mental stimulation through toys, foraging opportunities, and environmental enrichment maintains engagement and activity.

Treatment decisions should consider the individual rabbit's overall health, quality of life, owner resources, and realistic expectations. Arterial disease cannot be cured, but progression can often be slowed with appropriate management. Regular veterinary monitoring helps assess response to treatment and adjust interventions as needed. Cost considerations are realistic factors, as long-term management involves ongoing expenses. Quality of life must guide all decisions, focusing on maintaining comfort and enjoyment of life rather than aggressive interventions that may burden the rabbit. Honest discussions with the veterinarian about prognosis help owners make informed decisions.

Recovery timeline for arterial disease management differs from conditions with definitive treatments because arteriosclerosis and atherosclerosis are chronic, progressive conditions rather than acute illnesses that resolve. When dietary and lifestyle modifications are implemented, improvements in blood lipid levels may occur within weeks to months. Weight loss occurs gradually over weeks to months with appropriate management. Improvement in exercise tolerance and energy levels may be noticed as cardiovascular conditioning improves and excess weight is lost. However, established arterial changes do not reverse, so management focuses on slowing progression rather than achieving recovery to pre-disease state.

Ongoing care following diagnosis centers on maintaining appropriate diet, weight, and activity levels. Daily care includes providing unlimited grass hay, appropriate fresh greens, and limited pellets while avoiding all inappropriate foods. Monitoring food intake ensures adequate nutrition while preventing overeating. Fresh water must always be available. Encouraging daily exercise through supervised playtime maintains cardiovascular conditioning. Weight should be monitored weekly to track progress and identify concerning trends. Medications, if prescribed, must be administered consistently as directed. Regular veterinary check-ups allow monitoring of disease status and adjustment of management strategies.

Prognosis for rabbits with arterial disease depends on severity at diagnosis, effectiveness of management interventions, presence of concurrent conditions, and individual response to treatment. Rabbits diagnosed early with mild disease who undergo successful dietary and lifestyle modification may maintain good quality of life for extended periods. Moderate disease with appropriate management can often be stabilized. Severe or advanced disease with organ damage carries more guarded prognosis. Acute cardiovascular events such as stroke or heart attack significantly affect prognosis regardless of underlying disease severity. Overall, prognosis is better for rabbits whose owners can implement comprehensive management strategies.

Long-term outlook for rabbits with arterial disease requires realistic expectations about disease management rather than cure. Some rabbits live comfortably for years with appropriate management. Quality of life can be maintained through attention to diet, weight, exercise, and veterinary care. Periodic reassessment monitors disease progression and guides treatment adjustments. Owners should understand that the condition may eventually progress despite best management efforts. End-of-life planning discussions become appropriate if quality of life declines significantly. The goal throughout management is maximizing comfort, enjoyment, and quality of remaining life rather than focusing solely on longevity.

Primary prevention of arteriosclerosis and atherosclerosis centers on appropriate diet from the earliest age. Rabbits should be fed a species-appropriate diet consisting of at least eighty percent unlimited grass hay, which provides essential fiber with negligible fat content. Fresh leafy greens daily supply vitamins and minerals without excess calories. Commercial pellets should be high-quality, hay-based formulations fed in limited amounts appropriate to body size. All high-fat foods including seeds, nuts, commercial treats with added fats, and human foods must be avoided. Establishing proper dietary habits from the beginning of rabbit ownership prevents the metabolic disturbances that lead to arterial disease.

Environmental prevention focuses on providing opportunities for regular physical activity and maintaining healthy body weight. Housing should provide adequate space for exercise, with minimum recommendations of at least four times the rabbit's body length for enclosures plus daily access to larger exercise areas. Daily supervised playtime outside the enclosure encourages physical activity. Environmental enrichment including toys, tunnels, platforms, and foraging opportunities motivates movement. Indoor housing is generally recommended for safety, but must include sufficient space and enrichment to prevent sedentary behavior. Outdoor exercise time in safe, enclosed areas provides additional activity opportunities.

Dietary prevention throughout life maintains appropriate body condition and metabolic health. Regular assessment of body condition helps identify weight gain early before obesity develops. Adjusting pellet amounts based on weight trends prevents gradual weight accumulation. Avoiding the temptation to offer unhealthy treats, regardless of the rabbit's apparent enjoyment, prevents dietary excess. Understanding that rabbits' natural diet contains virtually no fat helps owners resist inappropriate food offerings. Teaching family members, particularly children, about appropriate rabbit foods prevents well-meaning but harmful feeding.

Health maintenance through regular veterinary care enables monitoring of cardiovascular risk factors. Annual wellness examinations allow assessment of body weight, body condition, and overall cardiovascular health. Blood work including lipid panels can identify hyperlipidemia before clinical disease develops. Heart auscultation during routine examinations may detect early cardiac changes. Discussion of diet and husbandry at each visit reinforces appropriate practices. Early intervention when risk factors are identified prevents progression to clinical disease.

Early intervention when risk factors are identified prevents or delays disease development. Weight management should begin immediately if obesity is identified, with veterinary guidance on safe weight loss strategies. Dietary correction should occur promptly when inappropriate feeding is discovered. Any signs of reduced activity, exercise intolerance, or cardiovascular symptoms warrant thorough veterinary evaluation. Addressing risk factors early, before significant arterial changes develop, offers the best opportunity for preventing clinical disease. Owner education about the strong link between diet and arterial disease in rabbits supports effective prevention.

Daily management for rabbits with arterial disease requires consistent attention to diet, exercise, and overall care. Daily feeding should follow strict guidelines established with the veterinarian, including unlimited grass hay, appropriate fresh greens, and measured pellet portions. High-fat foods and inappropriate treats must be completely avoided. Water intake should be monitored, as adequate hydration supports cardiovascular function. Daily exercise periods in safe, supervised environments maintain cardiovascular conditioning and help with weight management. Medication administration, if prescribed, must occur consistently at directed times and doses. Daily observation of behavior, breathing, appetite, and activity levels helps identify any changes requiring veterinary attention.

Home environment optimization supports cardiovascular health and overall wellbeing. Housing should provide adequate space for movement while avoiding the need for excessive exertion such as high jumps that might stress a compromised cardiovascular system. Flooring should provide good traction to prevent slipping. Temperature control is important, as heat stress particularly burdens the cardiovascular system; rabbits are heat-sensitive and should be kept in comfortable temperatures between sixty and seventy degrees Fahrenheit. Quiet, low-stress surroundings reduce cardiovascular demands. Easy access to food, water, and litter areas prevents unnecessary physical stress. Remove obstacles that require difficult navigation.

Quality of life considerations guide management decisions for rabbits with cardiovascular disease. Signs of good quality of life include interest in surroundings, willingness to move and explore within comfortable limits, normal appetite, regular fecal output, and social engagement. Signs suggesting declining quality of life include persistent lethargy beyond expected exercise limitations, complete disinterest in surroundings, refusal to eat, labored breathing at rest, or obvious distress. The goal of management is maintaining comfortable, enjoyable life rather than simply extending lifespan. Regular assessment of quality of life helps guide decisions about treatment intensity and eventual end-of-life planning.

Ongoing monitoring and veterinary care are essential for managing chronic arterial disease. Regular veterinary visits, typically every three to six months for stable patients, allow monitoring of disease progression, cardiovascular status, and response to management. Blood work monitoring tracks lipid levels and organ function. Body weight should be recorded at home weekly and at each veterinary visit. Any new symptoms or significant changes in condition should prompt veterinary evaluation. Medications may need adjustment based on disease progression or side effects. Open communication with the veterinarian about observations at home helps optimize management.

Caregiver support resources help owners manage the demands of caring for a rabbit with chronic disease. Understanding that arterial disease is a manageable chronic condition rather than an immediate crisis helps owners maintain appropriate perspective. Rabbit health resources including the House Rabbit Society provide information about diet and general care. Veterinary nutrition resources can guide appropriate dietary management. Online communities connect owners managing similar conditions for practical advice and emotional support. Financial planning for ongoing veterinary care and potential medications helps reduce stress. Recognition that providing appropriate management makes a meaningful difference in the rabbit's quality of life provides motivation for sustained effort.

High-risk categories for arterial disease in rabbits relate more to individual factors than specific breed predisposition, though some associations exist. Laboratory strains bred for atherosclerosis research, such as Watanabe heritable hyperlipidemic rabbits and some New Zealand White lines, have genetic susceptibilities that may exist in varying degrees in pet populations. Obese rabbits of any breed face dramatically elevated risk regardless of genetic background. Senior rabbits over six to seven years naturally experience age-related arterial changes. Rabbits fed inappropriate high-fat diets develop disease regardless of breed. Individual genetic variation in lipid metabolism likely contributes to risk, but comprehensive breed-specific studies in pet populations are limited.

Moderate risk applies broadly across rabbit breeds, with individual and lifestyle factors playing predominant roles. Both large and small breed rabbits can develop arterial disease under appropriate conditions. Mixed breed rabbits are equally susceptible as purebreds. Age increases risk across all breeds as arterial degeneration accumulates over time. Sedentary rabbits, regardless of breed, face higher risk than active rabbits. Diet quality affects all breeds similarly, with inappropriate feeding causing metabolic disturbances regardless of genetic background. The most important risk factors, including diet, weight, and activity level, are modifiable regardless of breed.

Screening recommendations emphasize lifestyle assessment and metabolic monitoring rather than breed-based protocols. All rabbits should have dietary practices reviewed at each veterinary visit to ensure appropriate feeding. Body condition scoring at regular intervals identifies obesity requiring intervention. Blood lipid panels can be performed in rabbits at increased risk based on diet history, body condition, or age. Cardiac auscultation during routine examinations screens for heart abnormalities. Senior rabbits, typically those over five to six years, warrant increased cardiovascular surveillance. Rabbits with known risk factors including obesity, previous inappropriate diet, or sedentary lifestyle should receive more frequent monitoring.

Commonly co-occurring conditions with arterial disease often share underlying risk factors or develop as consequences of cardiovascular compromise. Obesity frequently coexists, as it both contributes to and results from reduced activity associated with cardiovascular disease. Hypertension (high blood pressure) may accompany arterial disease and compounds vascular damage. Cardiomyopathy (heart muscle disease) may develop secondary to chronic increased cardiac workload from arterial disease or share underlying causes. Kidney disease can result from poor renal perfusion due to arterial narrowing. Hepatic lipidosis may occur if reduced appetite leads to dangerous fat mobilization. Gastrointestinal stasis commonly develops secondary to any condition causing discomfort or reduced appetite in rabbits and requires immediate attention.

Conditions with similar symptoms to cardiovascular disease require differentiation for appropriate treatment. Respiratory disease including pneumonia, pasteurellosis, or allergic conditions causes breathing difficulty that may mimic cardiac origin. Primary cardiomyopathy affects the heart directly rather than through arterial disease. Anemia from various causes reduces oxygen delivery and causes similar exercise intolerance. Obesity alone, independent of arterial disease, causes reduced activity and respiratory effort. Musculoskeletal conditions including arthritis or spondylosis cause reluctance to move. Neurological conditions may cause similar weakness or collapse. Cancer involving the heart or mediastinum produces cardiovascular symptoms. Thorough diagnostic evaluation differentiates these conditions.

Potential complications from arterial disease include serious acute and chronic consequences. Chronic complications include progressive organ damage from reduced blood flow, heart failure from chronic increased cardiac workload, and general decline from inadequate tissue perfusion. Acute complications include stroke from cerebral artery occlusion, causing sudden neurological symptoms such as head tilt, paralysis, or collapse. Myocardial infarction (heart attack) can occur if coronary arteries are affected. Acute limb ischemia from peripheral arterial occlusion causes sudden limb weakness or coldness. Any acute event requires immediate emergency veterinary care. Secondary GI stasis from illness-related appetite reduction can become life-threatening and must be addressed urgently whenever a rabbit stops eating normally.