Treat a drooling guinea pig as urgent — see an exotic or small-animal vet promptly, and as an emergency if it has also stopped eating. Drooling and a wet chin in a guinea pig nearly always mean a dental problem — overgrown back teeth (molars) that trap the tongue or cut the cheek. It's painful, stops normal eating, and can quickly lead to gut stasis, so it should never be left.
## Why guinea pigs drool A guinea pig's teeth grow continuously and are worn down by chewing hay. On a diet too low in hay, the molars can overgrow and form a "bridge" over the tongue or sharp spurs that injure the mouth. This causes pain, prevents eating, and lets saliva drip onto the chin and chest ("slobbers").
## Why prompt care matters A guinea pig in mouth pain eats less, and a guinea pig that stops eating develops GI stasis within hours. Correcting the teeth (which needs special equipment under veterinary care) relieves the pain and lets it eat again. Dental problems tend to recur, so ongoing management is important.
## Signs to check - A wet chin, chest, or front legs, sometimes with matted fur. - Dropping food, eating slowly, or picking up food then spitting it out. - Weight loss and fewer droppings. - Pawing at the mouth.
Get to a vet immediately if you see any of these
- Drooling together with not eating or no droppings
- A facial swelling or lump under the jaw
- Ongoing wet chin, dropping food, and weight loss
- Pawing at the mouth or obvious mouth pain
- A sudden onset of drooling
Common questions
Is drooling always dental?
In guinea pigs, drooling is usually caused by overgrown molars. Occasionally it's a mouth injury or another problem. A vet needs to examine the back teeth, which requires special equipment.
My guinea pig is drooling but still nibbling — can it wait?
See a vet promptly rather than waiting. Dental pain reduces eating, and appetite can drop suddenly; catching it early avoids the slide into gut stasis.
How do I prevent dental disease?
A diet based on unlimited grass hay keeps the molars worn down. Too many pellets or treats and too little hay is the main cause of dental overgrowth in pet guinea pigs.
Sources
This page is general guidance, not veterinary advice, and cannot diagnose your pet. It does not replace an examination by a licensed veterinarian. When in doubt, treat it as an emergency and contact a vet or your nearest 24/7 emergency clinic right away.
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