1. Immediate Action:
* Observe: Watch your guinea pig closely for any other symptoms: lethargy, hunched posture, diarrhea, unusual noises, etc.
* Warmth: Make sure your guinea pig has a warm, draft-free environment.
* Water: Offer fresh, clean water. If they are dehydrated, this is critical.
2. Consult a Vet ASAP:
* Emergency: If your guinea pig shows any signs of distress (like difficulty breathing, loss of consciousness, etc.) or if they haven't eaten in 12 hours, contact your veterinarian immediately.
* Regular Vet: Schedule an appointment with your vet as soon as possible. They can examine your guinea pig and determine the cause of the lack of appetite.
3. Potential Causes:
* Dental Issues: Guinea pigs constantly grow their teeth. If their teeth are overgrown, it can make eating painful and difficult.
* Illness: Many illnesses can lead to a loss of appetite, including infections, parasites, and gastrointestinal problems.
* Stress: Changes in their environment, new cage mates, or loud noises can stress guinea pigs and affect their appetite.
* Dietary Issues: If your guinea pig is offered a diet lacking essential nutrients, they might not be interested in eating.
4. Things to Consider While You Wait for the Vet:
* Offer Fresh Food: Try offering your guinea pig their favorite foods, fresh fruits and vegetables, and even some Timothy hay.
* Hand Feeding: If they aren't eating on their own, try hand-feeding them small amounts of critical care food (available at pet stores). This should only be done as a temporary solution.
* Observe: Keep a close eye on your guinea pig's behavior, noting any changes in their mood or activity level.
Remember: Never self-diagnose or treat your guinea pig. A vet's professional assessment and guidance are crucial for your furry friend's health and well-being.