mammal
Degu
Octodon degus
Degus are unusual among commonly kept pet rodents in being genuinely diurnal — active during the day rather than at night — and are intensely social, vocal animals that should never be housed alone. Their single most consequential care fact is a documented, pronounced sensitivity to dietary sugar: unlike a hamster or gerbil, a degu fed fruit or sugary treats with any regularity is at real risk of developing diabetes, and this shapes nearly every feeding decision a keeper makes for this species.
5-8 years, sometimes longer
10-12 inches including tail, 170-300g
Matorral scrubland of central Chile, at moderate elevation in the Andes foothills
Husbandry
- Minimum 24x24x36in for a small group, with a taller, multi-level enclosure preferred to support this species' active climbing and jumping behavior
- Source: Merck Veterinary Manual — Small Mammal Husbandry / degu welfare guidance (checked 2026-02-20)
- Stable room temperature 65-75°F (18-24°C); avoid excessive heat and humidity, which this arid-adapted species tolerates poorly
- Source: Merck Veterinary Manual — Small Mammal Husbandry (checked 2026-02-20)
- Timothy or grass hay as the dietary base with a measured portion of low-sugar, low-fat degu-specific or guinea-pig-style pellets; fruit and sugary treats should be avoided or offered only in genuinely token amounts given this species' pronounced diabetes risk
- Source: Merck Veterinary Manual — Small Mammal Nutrition (checked 2026-02-20)
- Degus are highly social and should always be kept in same-sex pairs or small groups — solitary housing is a genuine welfare concern for this species, not just a missed enrichment opportunity
- Source: Degu welfare / small-mammal husbandry guidance (checked 2026-02-20)
- Paper-based or aspen bedding with a deep layer for digging; a dust bath (similar to a chinchilla's) is commonly offered and enjoyed by this species
- Source: Degu husbandry guidance (checked 2026-02-20)
Honest disagreement among sources
Current best practice: Fruit, sugary commercial treats, and even naturally sweet vegetables should be offered only rarely if at all, given how strongly diabetes risk in this species is tied to sugar intake.
Noted disagreement: Some general small-pet care guides lump degus in with hamsters or gerbils and suggest occasional fruit is fine in small amounts, which understates a documented species-specific risk — degus develop diabetes and cataracts from dietary sugar far more readily than most other pet rodents.
Myth flagged: Treating a degu like 'a hamster with a longer lifespan' and offering the same treats appropriate for a hamster ignores a real, well-documented difference in sugar tolerance between the species.
Handling
Degus have a tail-slip defense mechanism similar in concept to a chinchilla's fur slip, but with a more serious consequence: if grabbed by the tail, the skin can degl ove (slip off) and, unlike a chinchilla's regrown fur patch, the exposed tail bone typically doesn't heal and often needs a vet to amputate the affected portion. Always support the body fully and never restrain or lift by the tail. Degus are otherwise food-motivated, curious, and often become confidently hand-tame with regular, gentle handling.
Setting up the enclosure
The 24x24x36in minimum is meant for a small group rather than a single degu, since this species should never be housed alone — a taller, multi-level enclosure with ledges, platforms, and climbing branches supports the active, exploratory behavior degus show throughout their daytime waking hours in the wild.
A dust bath, similar to what's offered to a chinchilla, is commonly included in a well-set-up degu enclosure and is generally used enthusiastically — while not as strictly essential as it is for a chinchilla's coat health, it's a well-established and appreciated part of this species' routine care.
Because degus are enthusiastic diggers, a deep layer of paper-based or aspen bedding supports natural burrowing behavior, and providing a mix of open floor space and enclosed hides accommodates both this species' social grouping needs and its instinct to have a secure retreat available.
Multiple hides and multiple feeding stations spread across the enclosure, rather than a single hide or a single food dish, matter more for this species than for a strictly solitary small mammal, since a group housed together needs enough duplicate resources that no individual degu is forced into repeated close-contact competition just to eat or find a secure resting spot.
Enclosure furniture made from safe, chewable wood serves double duty for degus — supporting both the natural gnawing behavior that helps manage continuously growing teeth and the climbing and exploration this active, vertically-inclined species needs, which is why a bare wire or plastic setup without any wooden platforms or ledges tends to underserve this species even when the floor space itself technically meets the minimum.
Why the lighting and heating numbers matter
No UVB is strictly required for this species, though natural daylight cycles matter more here than for most nocturnal rodents on this site, since degus are genuinely diurnal — active by day and resting at night — and benefit from an enclosure placement that gets natural light exposure during the day rather than being kept in a permanently dim or artificially lit room.
A stable 65-75°F range suits this species well, and because degus are adapted to a relatively arid, moderate-elevation habitat, they tolerate excessive heat and especially high humidity poorly — a damp, overly warm room is a less comfortable environment for this species than the more universally tolerated moderate range suggests at first glance.
A room that swings noticeably between day and night temperatures, or one prone to sudden shifts from a nearby HVAC vent or drafty window, is worth avoiding for enclosure placement specifically because this species' documented environmental sensitivity applies to consistency as much as to absolute range — a stable room within the target range generally serves this species better than one that technically averages an acceptable temperature but fluctuates significantly through the day.
Feeding in practice
Timothy or grass hay forms the dietary base, supplemented with a measured, genuinely modest portion of low-sugar, low-fat pellets — this species' diet should look considerably more restrained on the treat side than a hamster's or gerbil's, given how directly linked sugar intake is to this species' documented diabetes and cataract risk.
Fresh vegetables can be offered in modest amounts, favoring lower-sugar options, while fruit should be avoided entirely or offered so rarely and in such small quantities that it functions more as a rare exception than a routine treat — this is a meaningfully stricter standard than applies to most other rodents covered on this site.
Continuous access to appropriate chew material supports this species' continuously growing teeth, and hay itself does double duty here, providing both the fiber this species' gut needs and much of the grinding activity that keeps teeth worn evenly.
Fresh water should be checked daily, and given this species' diabetes risk, a keeper noticing a specific degu drinking noticeably more than its group-mates has a genuine reason to flag this at a vet visit rather than assuming it's simply warm weather or normal individual variation.
Because degus forage steadily throughout their daytime waking hours in the wild, offering hay in a way that requires some searching or pulling — rather than a single convenient pile always in the same spot — gives a captive degu a small taste of the natural foraging effort its digestive and behavioral rhythms are adapted to, alongside the straightforward nutritional benefit of unlimited hay access.
Common mistakes with this species
Offering fruit or other sugary treats with any regularity, sometimes based on how enthusiastically a degu accepts them or out of habit from keeping other, more sugar-tolerant rodents, is the most consequential and most degu-specific mistake — this species develops diabetes and cataracts from dietary sugar more readily and reliably than most other pet rodents.
Housing a single degu alone, sometimes based on limited cage space or a mistaken assumption that a well-handled degu doesn't need rodent company, ignores this species' genuine, well-documented social needs — solitary housing is a welfare concern here, comparable to the same issue in guinea pigs.
Restraining or lifting a degu by the tail, sometimes out of simple unfamiliarity with this species' specific tail-slip risk, can cause a degloving injury that, unlike a chinchilla's regrowing fur patch, typically requires vet amputation of the affected tail portion and doesn't heal on its own.
Keeping a degu in a dim, artificially lit room without natural daylight exposure overlooks this species' genuinely diurnal nature, which can disrupt its normal activity cycle in a way that doesn't apply to the many nocturnal rodents more commonly kept as pets.
Underestimating this species' climbing and jumping activity by providing an undersized or flat, single-level enclosure limits a degu's ability to express natural behavior that a properly furnished, vertical setup would otherwise support.
Grabbing or restraining a degu near the tail even briefly during an otherwise gentle handling session — for instance, using a light touch on the tail to guide or steady the animal rather than actually gripping it — carries the same degloving risk as a more obviously rough handling mistake, since this species' tail-slip mechanism can trigger from a startled reaction to any tail contact, not only a deliberate grab.
Lifespan and what to expect
A 5-8 year lifespan, sometimes longer, puts the degu in a middle position between the shorter-lived hamsters and gerbils and the considerably longer-lived chinchilla, making this a multi-year commitment that deserves planning consideration beyond what a hamster's much shorter lifespan requires.
Because diabetes and cataract risk are real, ongoing considerations tied directly to diet, a keeper committing to a degu is committing to consistent, lifelong dietary discipline around sugar in a way that matters more here than for most other small pets on this site.
As a degu ages, cataracts can develop even with reasonably careful diet, since some age-related lens changes occur independent of sugar intake — this is worth discussing with a vet as part of routine senior wellness checks rather than assuming any cloudiness in an older degu's eyes is necessarily diet-related.
Temperament in more depth
Degus are notably food-motivated and curious, and most individuals become confidently hand-tame with regular, gentle handling that never involves grabbing at the tail — offering a hand calmly and letting a degu approach and climb on voluntarily builds trust faster than reaching in to pick one up directly.
This species' vocal range is considerable, and learning a specific group's normal chattering, chirping, and alarm-call sounds makes it easier to notice a genuinely unusual vocalization pattern that might indicate stress, injury, or illness.
Because degus are diurnal, daytime handling sessions align with this species' natural active period, unlike the nocturnal hamsters and gerbils on this site where daytime handling means waking a resting animal — this makes the degu one of the more conveniently timed small mammals for a keeper who wants interaction during normal daytime hours.
Signs of good health
- Bright, clear eyes with no cloudiness — cataracts are a specific concern in this species and are strongly linked to dietary sugar intake
- Steady weight and normal thirst — excessive drinking or urination can be an early diabetes sign
- Dry, well-formed droppings and consistent daily activity during its diurnal waking hours
- Smooth coat with no bald patches, and an intact tail with no degloving injury
- Active vocalization and social engagement with cage-mates, typical for this highly communicative species
Common problems
13 common mammal problems are tracked for this species; 13 have full guides published so far.
- Degu Not Eating
- Overgrown Teeth in Degus
- True Diarrhea in Degus
- Mites and Fur Loss in Degus
- Respiratory Infection in Degus
- Bar-Chewing and Stress Behavior in Degus
- Overgrown Nails in Degus
- Abscesses in Degus
- Ingested Debris and Gut Impaction in Degus
- Barbering in Degus
- Lumps and Tumors in Degus
- Lethargy in Degus
- Aggression and Biting in Degus
Safe & unsafe foods for Degu
Sourced verdicts for specific food items — see the Food Safety Checker for a fast lookup, or the full food safety index.
Recommended gear for Degu
Equipment categories that are genuinely correct for this species' welfare needs — see the full Gear Guide for the complete list.
Digital infrared temperature gun
Measures actual basking SURFACE temperature, not just ambient air — a stick-on dial thermometer reads air temp, which is a poor proxy for the surface temp that drives digestion and thermoregulation.
Dust-extracted, paper- or hay-based small-mammal bedding
Cedar and unwashed pine shavings release aromatic oils linked to respiratory irritation in small mammals — paper-based or kiln-dried, dust-extracted bedding is the safer sourced default.
Foraging-based enrichment (treat balls, puzzle feeders)
Foraging-based feeding meaningfully reduces stress-driven behaviors (feather plucking in birds, bar-chewing in small mammals) compared to a plain food bowl — matches the enrichment guidance referenced across the relevant species and problem pages.
Some links below are Amazon Associates / Chewy affiliate links — Keepers Guide may earn a small commission on qualifying purchases, at no extra cost to you. We only recommend equipment categories that are genuinely correct for the species' welfare needs; we never recommend a product because of the commission.
This is general educational care information, not veterinary diagnosis. For a sick or injured animal, see a qualified exotic-animal vet promptly — especially for anything acute (not eating combined with lethargy, breathing changes, bleeding, or any sudden behavior change). Nothing on this page substitutes for an in-person exam.