Degu Not Eating

A degu that's eating less than usual deserves a somewhat different set of first suspicions than a hamster or gerbil in the same situation, because this species carries a documented, pronounced sensitivity to dietary sugar that most other commonly kept pet rodents don't share to the same degree — a degu with any history of fruit or sugary treats showing reduced appetite alongside increased thirst or urination should be evaluated with diabetes specifically in mind, not just a general digestive concern.

Dental pain remains a common and preventable cause independent of the sugar-sensitivity issue — a degu's teeth, like a chinchilla's or a rabbit's, grow continuously, and overgrown or misaligned molars can make chewing hay genuinely painful, leading to a degu that approaches food but eats less of it or shows a preference for softer items.

Group housing introduces a cause of apparent appetite loss worth checking for directly: because degus are highly social and kept in groups, a subordinate individual can be pushed away from a shared food source by a more dominant cage-mate, and this can go unnoticed if a keeper only checks whether food is disappearing from the dish overall rather than watching an actual feeding period.

Cataracts, a documented complication in degus with a history of high sugar intake, sometimes develop alongside or before more obvious diabetes symptoms, and a degu showing both reduced appetite and any visible eye cloudiness should be evaluated for both conditions together rather than treated as two unrelated issues.

General digestive slowdown from insufficient dietary fiber or inadequate hydration can also reduce appetite, similarly to the pattern seen in this species' close relative the chinchilla — keeping hay as the dietary base and water reliably available addresses this cause directly.

Because this species' sugar sensitivity is genuinely more pronounced than in most rodents on this site, a vet evaluating reduced appetite in a degu should be told about the animal's typical diet, including any treats, since this context meaningfully narrows down which underlying cause is most likely.

Degus are diurnal, unlike most of the small rodents covered on this site, which means a keeper actually gets to watch normal daytime foraging behavior directly rather than inferring activity from overnight food disappearance — this is a genuine practical advantage for catching reduced appetite early, since a change in a degu's typical mid-morning or afternoon feeding pattern is something a keeper can observe firsthand rather than reconstruct after the fact.

A degu refusing food while still drinking normally points more toward a dental or GI cause than diabetes, since diabetic illness in this species typically comes with increased, not steady, thirst — noting the direction of any thirst change, not just whether appetite has dropped, gives a vet a genuinely useful extra data point.

Because degus are social foragers that often eat in loose proximity to one another, a keeper who's used to seeing the whole group cluster around the food source at the same time should treat one animal consistently hanging back, even briefly, as worth a closer look rather than dismissing it as normal individual variation.

Avoiding fruit and sugary treats as a matter of routine, rather than only after a health concern arises, removes this species' most significant and most preventable disease risk factor.

Watching an actual feeding period in a group, not just overall food disappearance, catches a subordinate degu's reduced intake before it progresses to a visible weight change.

Scheduling routine dental checks catches molar overgrowth before it causes genuine eating difficulty.

Watching thirst and eye clarity alongside appetite gives an early warning specific to this species' diabetes and cataract risk.

Keeping unlimited hay available as the dietary base supports the gut motility that helps prevent a general digestive slowdown.

Weighing each degu in a group individually on a regular schedule, rather than assessing the group's condition collectively, is the only way to catch one individual's decline in a household that otherwise looks fine.

Taking advantage of this species' diurnal schedule by observing an actual daytime feeding session every so often, rather than only glancing at the food dish, builds real familiarity with what normal group feeding behavior looks like.