Small pets are prey animals by instinct, which means they’re good at masking illness until it’s serious. Daily observation matters more than it does for many other pets.
Warning Signs
Reduced appetite or not eating at all (an emergency in rabbits and guinea pigs, whose digestive systems can shut down quickly), lethargy, hunched posture, overgrown teeth, or unusual discharge from eyes or nose.
Dental Health
Rabbit and guinea pig teeth grow continuously — unlimited hay helps wear them down naturally. Overgrown teeth can prevent eating entirely and need a vet’s attention.
Respiratory Issues
Often linked to ammonia buildup from dirty bedding — regular cage cleaning is a genuine health measure, not just tidiness.
When to See a Vet Immediately
A rabbit or guinea pig that stops eating for more than 12-24 hours needs urgent veterinary attention — their digestive systems are not built to handle extended fasting.
