Possible Reasons for Decreased Appetite:
* Stress: Introducing a new guinea pig can be stressful for both animals, leading to changes in appetite and behavior.
* Social Hierarchy: Guinea pigs establish social hierarchies. The new pig may be dominant, and the other may be intimidated, causing the less dominant pig to eat less.
* Territoriality: If the cage is too small or the pigs are not bonded, the existing guinea pig might feel threatened by the new one and refuse to eat out of fear.
* Illness: While less likely, the decrease in appetite could be due to an underlying medical condition in either guinea pig.
What You Can Do:
1. Separate the Pigs: If the guinea pig is refusing to eat, separate them immediately. Provide the pig that is not eating with a quiet, familiar environment.
2. Monitor for Illness: Observe for signs of illness like lethargy, diarrhea, or weight loss. Consult a veterinarian if you have any concerns.
3. Gradual Introduction: Once the guinea pig is eating again, introduce them to the new pig gradually. Start with scent swapping, then supervised interaction in a neutral area, before finally introducing them back into the cage.
4. Enrichment and Space: Provide plenty of hiding places, tunnels, and toys in the cage to help the guinea pigs feel secure and reduce stress.
5. Diet: Ensure the guinea pig has access to fresh hay, vegetables, and a good quality guinea pig food. Offer small portions of their favorite treats to encourage eating.
6. Patience: Bonding can take time. Be patient and supportive, and don't force interaction.
Important: If the guinea pig continues to refuse food for more than 24 hours, seek veterinary attention immediately.
Remember, guinea pigs are sensitive creatures, and introducing a new cage mate can be stressful. Observe their behavior closely and consult a veterinarian if needed.