Keepers Guide

Overgrown Teeth in Degus

All of a degu's teeth grow continuously — incisors and molars alike — and hay-based dental wear matters as much here as it does for a chinchilla or a rabbit, with drooling, dropped food, and a change in a degu's normally orange-tinted incisor color among the key warning signs.

Possible causes

  • Too little coarse browse relative to pellets — a degu's molars need the same sustained grinding a chinchilla's do, but from a diet naturally higher in bark, herb stems, and other fibrous matorral vegetation than a typical pelleted ration provides
  • A congenitally short or misaligned jaw that keeps opposing teeth from meeting correctly, a structural problem no amount of hay or chew time can fully correct on its own
  • An injury to a tooth changing its wear angle relative to its opposite
  • A gradual decline in chewing efficiency in an aging degu, since dental tissue quality can shift over a long-lived rodent's later years in ways that make previously adequate hay intake less effective at maintaining even wear
  • A history of low-fiber, high-starch treats crowding out actual browsing and chewing time, which compounds this species' separate, well-documented sugar-sensitivity risk on top of the dental effect

What to do

  • Increase hay and offer a fresh browse item (a safe, unsprayed branch or herb stem) immediately if hay isn't already the dietary base, since this is the most direct lever for ongoing molar wear
  • Check for drooling or wet fur around the chin and front paws
  • Look closely at incisor color against what's normal for that specific degu, since a chip, unusual paleness, or an odd wear angle can flag a problem before drooling starts
  • Book a vet oral exam if any of these signs appear
  • Book a recheck once the vet recommends it, since a misaligned tooth usually needs several corrections spaced out over time rather than a single fix

Degus evolved gnawing on tough bark, herb stems, and scrubby matorral vegetation for hours during their active daylight hours, and a captive diet weighted toward pellets shortcuts that grinding time considerably — like their close relative the chinchilla, their molars keep growing throughout life, but the amount of chewing resistance a wild degu's jaw works against every day is genuinely hard to replicate with pellets alone.

Degu incisors, like those of many rodents, carry a natural orange-yellow tint from iron in the enamel, and a keeper who knows what a specific degu's incisors normally look like has a small extra tell available: a tooth that's chipped, unusually pale, or growing at a visibly different angle than its neighbors is worth a closer look even before drooling or weight loss appears.

A congenitally short or misaligned jaw is a separate, less preventable cause, and because this can also develop later in life from a knocked or chipped tooth rather than being present from birth, a degu with sudden-onset misalignment following a fall or a scuffle with a cage-mate can end up needing the same lifelong vet-scheduled trimming routine as one born with the structural problem, even though the two started from very different points.

Drooling and wet fur around the chin are the clearest visible signs of a molar problem, similar to the 'slobbers' seen in chinchillas, and this sign should prompt a full vet oral exam rather than being dismissed as a coat or grooming issue.

Trauma is a real trigger worth watching for specifically in a group-housed species like this one — a fall, an awkward catch on cage furniture, or an occasional bite sustained during a dispute with a cage-mate can each leave a tooth wearing at a slightly different angle than the one it meets, and this kind of acquired misalignment can show up well into an otherwise dentally healthy degu's life.

Trimming overgrown degu teeth, particularly molars, requires a vet with proper small-animal dental equipment and typically sedation — this isn't a safe or effective procedure to attempt at home given how delicate and difficult to access the back teeth are in an animal this size.

Because degus are diurnal and typically forage steadily through their waking hours, a keeper who already knows what normal daytime hay intake looks like for a specific animal is in a good position to notice the earlier, subtler drop-off in chewing time that often precedes obvious drooling by several days.

Degus can live 6-8 years or more with good care, considerably longer than most small pet rodents, which means a young degu with an inherited misalignment can face decades of recurring vet-scheduled trims — worth discussing openly with a breeder or rescue at acquisition, since it changes the long-term cost and handling commitment involved.

Preventing this long-term

Keeping hay as the actual dietary base, with pellets and treats kept to a small supplementary portion, matches how a wild degu would actually spend its foraging hours and does more for long-term molar wear than any other single husbandry change.

Asking the vet to check molars specifically at every routine visit, not just glance at the visible incisors, catches spurs and early misalignment long before hay intake visibly drops.

Noticing the small stuff first — a slightly smaller hay pile eaten overnight, the faintest dampness starting at the chin — buys time for a simpler fix than waiting until the signs are obvious.

Reducing fight risk within a group (adequate space, stable group composition) lowers the odds of an injury-triggered dental misalignment developing later.

A degu already known to have malocclusion does better on a standing vet-recommended trim calendar booked ahead of time, rather than waiting for visible discomfort to prompt each appointment.

Learning what a specific degu's incisor color and molar wear pattern normally look like, through occasional gentle checks during routine handling, makes a genuine change easier to spot than relying on drooling alone as the first sign.

Offering fresh, unsprayed browse (safe herb stems or twigs) as a rotating supplement to hay gives a degu's molars a texture and resistance closer to what wild matorral vegetation provides, rather than relying on hay and pellets alone.

When to see a vet

Drooling, dropped food, weight loss, or incisors that look noticeably overgrown are all reasons to book a vet exam for a degu — the molars can't be assessed safely while the animal is awake, so sedation is generally what it takes to actually see what's happening in the back of the mouth.

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.

Other Degu problems

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