A guinea pig that has stopped eating should see an exotics vet the same day. Guinea pigs need to eat constantly to keep their gut moving, and even 12 to 24 hours without food can become an emergency. Do not wait to see if it passes.
Common Reasons a Guinea Pig Stops Eating
- Dental problems: Overgrown or misaligned teeth make chewing painful. Pigs may drool, drop food, or favor soft items.
- GI stasis: The gut slows or stops. Signs include a bloated belly, tiny or no droppings, and a hunched, quiet pig.
- Respiratory or other infections: Look for sneezing, wheezing, or discharge from the eyes or nose.
- Pain or illness: Guinea pigs hide symptoms. A drop in appetite is often the first sign.
- Vitamin C deficiency: Pigs cannot make their own. Low levels can cause weakness, rough coat, and sore joints.
- Stress or changes: A new cage, a lost cage mate, heat, or loud noise can reduce appetite, though a prolonged refusal still needs a vet.
- Food issues: Stale hay, a pellet brand change, or spoiled vegetables.
What to Check Right Now
- Is there fresh, good-smelling hay available? Offer a new handful.
- Are there fresh droppings? Note how many and what size.
- Is the pig drinking, active, and breathing normally?
- Offer a favorite fresh vegetable such as bell pepper or leafy greens to see whether it will eat at all.
If your pig refuses everything, is lethargic, or has a swollen belly, call your vet or an emergency clinic that treats exotics now. Do not give human medicines, and do not give any medication unless your vet tells you to.
What Your Vet May Do
Your vet will examine the teeth, listen to the chest and gut, and may take x-rays. Many sick pigs need assisted feeding with a critical care formula made for herbivores. Your vet will show you how and how often to do it safely.
Preventing Appetite Problems
- Offer unlimited hay. See Hay for Guinea Pigs.
- Provide daily vitamin C through fresh vegetables like those in Best Vegetables for Guinea Pigs, plus a fortified plain pellet.
- Follow the feeding basics in What Do Guinea Pigs Eat?
- Schedule a yearly exam with an exotics vet and check droppings daily.
Bottom Line
A guinea pig that won’t eat is an urgent problem. Offer hay and greens, check for droppings, and contact an exotics vet quickly.
This article is general information, not veterinary advice. Always consult a veterinarian when your pet is sick.
