Degu Overgrown Teeth: Dental Disease Signs, Care & Prevention
General guidance — not a diagnosis. When in doubt, call your vet.
Why Your Degu's Teeth Never Stop Growing
There's a reason seasoned degu owners get a little obsessive about their pet's mouth. Those cheerful orange incisors are more than a quirky feature — they're a real-time health readout, and dental disease is one of the most common and serious problems these little Chilean rodents face. The reassuring part is that once you understand how a degu's mouth actually works, you can catch trouble early and prevent a lot of it.
Degus have 20 teeth — on each side of each jaw, one incisor, one premolar, and three molars — and every single one is elodont, meaning it grows continuously for life, with tall crowns and no fixed roots [3]. In plain terms, a degu's teeth behave more like fingernails than our own: they keep pushing up, day after day, for life. In the wild, all that growth is balanced by all-day grinding on tough, dry grasses. That constant chewing is the whole point — it wears the teeth down at exactly the rate they grow. Remove the coarse fiber, and nothing keeps them in check.
Why Dental Disease Happens in Degus
The single biggest cause of degu dental disease is diet. When a degu eats mostly soft commercial pellets and treats instead of coarse grass hay, the teeth simply don't get worn down enough to match their growth. This is exactly what veterinary references describe: dental problems in rodents come from a "lack of normal wear and tooth elongation," which happens when they get concentrates "with only limited access to hay" [4]. As the crowns elongate, they drift out of alignment — a problem called malocclusion.
Too many sugary treats make things worse (and because degus are prone to type 2 diabetes, sugar is doubly risky) [2]. Genetics play a part too: there may be a genetic component in some lines, though most cases trace back to diet [3]. Overgrowth doesn't only happen where you can see it: the tooth roots — the apical portion buried in the jaw — often begin elongating before the visible crowns do, so dental disease can be well advanced before an owner notices anything wrong [6].
The Orange-Teeth Rule Every Owner Should Know
Here is the single most useful thing a degu owner can learn: healthy degu teeth are supposed to be orange. RSPCA guidance states plainly that "degus' teeth are naturally a yellow-orange colour" and that "white teeth can be a sign of poor health" [1]. That deep orange comes from iron pigment laid down in the enamel of a well-nourished degu, so a bright, even orange is a good sign — not a stain to scrub away.
When the colour fades to pale yellow or turns white, it can flag a dietary imbalance or the early demineralization that travels alongside dental disease [3]. Because the teeth grow so quickly, it's worth a quick look every week; the RSPCA specifically recommends checking that they are the right colour, length and shape [1].
Signs of Dental Disease in Degus
Degus are stoic little animals, and the early clues are easy to miss. Keep an eye out for:
- Drooling or a constantly wet, matted chin — owners often call it "slobbers"
- Dropping food, eating more slowly, or suddenly choosing only soft foods
- Gradual weight loss and a scruffy, unkempt coat
- Pawing at the mouth or an obvious reluctance to chew
- A watery or runny eye — overgrown tooth roots can press on or perforate near the tear duct, so a degu that seems to "cry" may in fact have a dental problem [3]
- A firm lump or swelling along the jaw or under the eye [3]
Most degus with dental disease arrive at the vet with weight loss, reduced eating and drooling [3], so if you notice two or three together, don't wait and see.
How Vets Treat Overgrown Degu Teeth
This is the part every owner needs to hear clearly: never try to trim your degu's teeth yourself, and never let anyone clip them with nail clippers or nippers. Clippers crush before they cut, which can fracture or split the tooth and expose the sensitive pulp inside — painful, and an open door to infection. Veterinary guidance is blunt about the right approach: "Never clip teeth. Instead use a bur in a dental handpiece" [4].
An exotics vet files the overgrown crowns back to shape with that bur under sedation or general anesthesia, which also allows a full, safe look at the whole mouth [4]. Because the underlying growth never stops, there is no permanent fix — degus with malocclusion usually need the treatment repeated and their mouths monitored over time [3]. That's also why an exotics vet matters: cheek-teeth malocclusion carries a poor prognosis and is strongly linked to mortality once it sets in, so early, skilled care is worth seeking out [6].
Preventing Dental Disease in Degus
Prevention is far kinder — and far cheaper — than treatment, and it comes down to giving those teeth something to grind on. Make good-quality grass hay available at all times. The RSPCA notes that hay "is much more important than commercial degu nuggets and should make up the majority of their diet" [2]. Offer only a small measured portion of degu pellets and leafy veg, and keep sugar low: skip fruit, molasses-based nuggets and sugary vegetables, both for the teeth and because degus are prone to diabetes [2].
Add safe things to gnaw on, too — untreated apple or willow branches and plain wooden chews encourage the natural, all-day wear a degu's teeth are built for. And keep up that weekly glance at tooth colour, length and shape [1]; catching a fading orange early is half the battle.
When to See a Vet
Book an exotics vet promptly if your degu shows any of these:
- Persistent drooling, a wet chin, or dropping food together with weight loss [3]
- Teeth that look overgrown or twisted, or that have turned pale or white instead of orange [1]
- A watery eye, or a lump or swelling along the jaw or face [3]
- Refusing to eat for more than a day, or eating only soft foods [3]
A quick second look
Is this something to watch—or call about?
Describe what you're seeing. Voyage will sort urgency, what to do at home, and when a vet should step in.
Frequently Asked Questions
Why are my degu's teeth orange?
That orange is exactly what you want to see. RSPCA guidance describes degus' teeth as "naturally a yellow-orange colour" [1]; that hue comes from iron pigment laid down in healthy, well-nourished enamel. Bright, even orange is a sign of good dental health, not something to scrub off.
My degu's teeth look pale or white — should I be worried?
Possibly, yes. The RSPCA states that "white teeth can be a sign of poor health" in degus [1], and losing the normal orange colour can reflect a dietary imbalance or the early demineralization seen with dental disease [3]. It's worth a vet check and a careful look at the diet.
Can I file or clip my degu's overgrown teeth at home?
No — please don't. Clipping with nail clippers or nippers can fracture or split the tooth and expose the pulp. Veterinary guidance says to "never clip teeth" and to reshape them with a dental bur instead, done by a vet under sedation or anesthesia [4].
What should I feed to keep my degu's teeth healthy?
Unlimited grass hay is the foundation — the RSPCA says hay "should make up the majority of their diet" and matters more than commercial nuggets [2]. Keep pellets and veg to a small measured portion, and avoid sugary foods, since degus are prone to diabetes [2].
Why does my degu have a watery or runny eye?
It can be a dental clue. When tooth roots overgrow, they can press on or perforate near the tear duct, so a degu that appears to "cry" may actually have a dental problem rather than a simple eye infection [3].
How common and how serious is degu dental disease?
Very common. In one study of 137 degus, molar malocclusion was the most common dental disorder, at 42.3% [5]. It is also serious: research links cheek-teeth malocclusion strongly to mortality, and the tooth roots often begin elongating before any visible sign appears [6].
References
- RSPCA — Degu health and welfare. https://www.rspca.org.uk/adviceandwelfare/pets/rodents/degus/health
- RSPCA — Degu diet. https://www.rspca.org.uk/adviceandwelfare/pets/rodents/degus/diet
- World of Degus — Dental disease and malocclusion in Octodon degus. https://www.worldofdegus.com/dental-disease-and-malocclusion-in-octodon-degus/
- LafeberVet — Dental Disease in Rabbits and Rodents. https://lafeber.com/vet/dental-disease-in-rabbits-and-rodents/
- Long CV (2012). Common Dental Disorders of the Degu (Octodon degus). Journal of Veterinary Dentistry. https://pubmed.ncbi.nlm.nih.gov/23193709/
- Prevalence of dental disorders in degus and evaluation of diagnostic methods (2017). Veterinary Record. https://pubmed.ncbi.nlm.nih.gov/29097602/