Degu — Adult & Prime Years

Adult degus reach their full size and physical maturity at approximately six to nine months of age, and their prime years extend from this point through roughly age five or six. During this period, a healthy degu should display a sleek, well-groomed coat with a rich agouti-brown coloration, bright and clear eyes, and a consistent body weight that typically falls between 170 and 300 grams depending on the individual's build and sex.

Routine health monitoring at home is one of the most effective tools for catching problems early. Weigh your degus weekly using a small kitchen or postal scale and record the results. Sudden weight loss or gain can indicate illness, dietary problems, or diabetes. Familiarize yourself with each degu's baseline weight and behavior so that deviations stand out quickly. Pay attention to eating habits, activity levels, and droppings, all of which serve as reliable indicators of internal health.

Annual or biannual wellness exams with an exotics veterinarian are strongly recommended during the adult years. These visits allow the vet to perform a thorough physical examination, check the teeth for signs of malocclusion or overgrowth, and screen for common degu health concerns including cataracts and diabetes. Establishing a veterinary relationship during the healthy years ensures you have a trusted resource available when emergencies arise.

Degus are stoic animals that often hide signs of illness until a condition has progressed significantly. Because of this tendency, subtle changes in behavior or appearance should never be dismissed. A degu that is slightly less active than usual, eating more slowly, or spending more time in the nest may be communicating discomfort that warrants closer observation or a veterinary consultation.

The dietary needs of adult degus remain centered on high-fiber, low-sugar nutrition. Unlimited timothy hay or other grass hay continues to be the cornerstone of the diet, providing the fiber necessary for healthy digestion and the abrasive texture needed to keep continuously growing teeth properly worn. A degu that is not consuming adequate hay is at risk for both gastrointestinal stasis and dental disease.

Pellets should be offered in measured, controlled portions—typically about one to two tablespoons per degu per day. Choose a plain, high-fiber pellet without added sugars, molasses, dried fruits, or colorful extras. The pellet component of the diet provides concentrated vitamins and minerals that hay alone may not supply in sufficient quantities, but overfeeding pellets can lead to obesity and selective eating where the degu ignores hay in favor of the richer food.

Fresh vegetables remain an important part of the adult diet, served in small daily portions. Rotate through a variety of safe greens and vegetables to provide nutritional diversity and enrichment. Suitable staples include romaine lettuce, fresh herbs, green beans, and small amounts of broccoli or cauliflower. Continue to avoid all fruits and high-sugar vegetables, as the degu's inability to regulate blood sugar makes even occasional sugary treats a genuine health risk.

Water quality and availability deserve ongoing attention. Clean and refill the water bottle daily, and periodically disassemble the sipper tube for thorough cleaning to prevent algae and bacterial buildup. If your water supply is heavily treated with chlorine or fluoride, allowing it to sit uncovered for several hours before filling the bottle can help dissipate some of the chemical additives.

Adult degus maintain the high energy levels and curiosity that characterize the species throughout their prime years. Physical activity is not merely beneficial for degus—it is a biological necessity. In the wild, degus spend a significant portion of their waking hours foraging, digging, and traversing their territory. Captive degus deprived of adequate exercise and stimulation develop stress-related behaviors, obesity, and a range of health problems.

The cage environment should be structured to encourage movement and exploration. Multiple platforms at varying heights connected by ramps, branches, or rope bridges create a three-dimensional space that degus will use enthusiastically. Rotate toys and accessories every week or two to maintain novelty, as degus are intelligent enough to become bored with a static environment. Foraging toys that require the degu to work for a small food reward are particularly effective at engaging their problem-solving abilities.

Regular out-of-cage exercise sessions continue to be valuable for adult degus. A degu-proofed room where the animals can run, climb, and explore provides physical and mental benefits that even the best cage setup cannot fully replicate. Some owners create dedicated play areas with climbing structures built from untreated wood, PVC tunnels, and digging boxes. These sessions also serve as excellent bonding opportunities between degus and their human companions.

Dust baths should be offered several times per week and remain an important component of coat care and enrichment. Adult degus typically develop a predictable enthusiasm for bath time, often leaping into the dust container the moment it is placed in the cage. Use only chinchilla-grade volcanic dust, and replace the dust regularly to maintain its effectiveness and hygiene.

Diabetes is the most significant health concern for adult degus and the one that demands the most vigilant preventive management. Degus lack the physiological ability to process sugar efficiently, making them predisposed to developing diabetes even under seemingly normal dietary conditions. Signs of diabetes include increased thirst and urination, weight changes, lethargy, and the development of cataracts. Strict dietary control is the primary preventive measure, and regular veterinary monitoring can catch early indicators before clinical disease develops.

Dental health requires ongoing attention throughout the adult years. Because degu teeth grow continuously, any disruption to normal wear patterns can result in overgrown or misaligned teeth that cause pain, difficulty eating, and secondary infections. Ensure your degus have constant access to hay and appropriate chew materials. If you notice drooling, difficulty eating, weight loss, or a preference for soft foods over hay, schedule a dental examination with your vet promptly.

Cataracts are another condition that affects degus with notable frequency, particularly those with poorly managed blood sugar levels. The lenses of the eyes become cloudy and opaque, progressively impairing vision. While cataracts cannot be reversed, degus adapt remarkably well to vision loss thanks to their reliance on whiskers, hearing, and spatial memory for navigation. Early detection through regular observation and veterinary eye checks allows you to make environmental modifications that support a visually impaired degu.

Skin and coat health should be monitored as part of your regular care routine. Hair loss, excessive scratching, flaky skin, or bald patches can indicate fungal infections, parasites, or stress-related barbering. Maintaining a clean cage environment, providing regular dust baths, and ensuring adequate social enrichment all contribute to healthy skin and fur.

By the time a degu reaches full adulthood, its personality and behavioral patterns are well established. Adult degus are typically confident, social, and vocal animals that interact readily with both their cage mates and their human caretakers. Each degu has a distinct personality—some are bold explorers who are the first to investigate any change in their environment, while others are more cautious observers who prefer to watch from a safe vantage point before engaging.

The social hierarchy within an established group tends to stabilize during the adult years, with dominant and subordinate roles generally accepted by all members. Occasional minor disputes are normal and typically resolve quickly through vocalizations and posturing rather than physical confrontation. However, significant changes to the group—such as the death of a companion, the introduction of a new member, or a move to a new cage—can temporarily destabilize the hierarchy and may require careful management.

Adult degus that have been well-socialized from a young age are often remarkably interactive pets. They may climb onto your hand voluntarily, respond to their names or specific sounds, and actively seek out human attention during their active periods. This level of engagement is one of the most rewarding aspects of degu ownership, but it requires ongoing investment in daily interaction. A degu that is handled infrequently will gradually become less comfortable with human contact.

Watch for behavioral changes that may signal health problems or stress. A normally active degu that becomes withdrawn, a previously friendly animal that begins biting, or a degu that stops vocalizing may be experiencing pain, illness, or social distress. These behavioral shifts are often the earliest warning signs available to an attentive owner and should prompt closer investigation.

Dental care is arguably the single most important aspect of ongoing degu maintenance. The continuously growing incisors and molars must be kept in check through natural wear, which is primarily achieved through constant hay consumption and chewing on appropriate hard materials. Providing a variety of chewing options—wooden blocks, pumice stones, mineral chews, and branches from safe trees such as apple, pear, or willow—helps ensure that all teeth receive adequate wear from different angles.

Regular visual inspection of the front incisors should be part of your weekly routine. Healthy degu incisors are yellow to orange in color, evenly aligned, and of equal length on both the upper and lower jaw. White, pale, or unevenly worn teeth can indicate nutritional deficiencies or developing malocclusion. The back molars are more difficult to assess without veterinary equipment, which is one of the reasons routine dental exams are so important for this species.

Grooming in degus is largely self-managed through dust bathing and mutual grooming within the social group. Unlike some pets, degus should never be bathed in water, as their dense fur takes a long time to dry and wet conditions can lead to fungal infections and hypothermia. The volcanic dust used in chinchilla baths absorbs oils and removes debris from the coat effectively without introducing moisture.

Nail care may occasionally be necessary, particularly for degus that do not have access to rough surfaces that naturally file down their claws. If nails become overgrown, they can catch on cage materials and cause injury or alter the degu's gait. Trimming can be done at home with small animal nail clippers, but the process requires a steady hand and a cooperative degu. If you are uncomfortable trimming nails yourself, your exotics veterinarian or a skilled veterinary technician can handle the task during routine visits.