A sick guinea pig should be seen by a veterinary surgeon who has the knowledge and experience to treat guinea pigs. It is crucial to seek veterinary attention promptly since guinea pigs have a tendency to hide illness as a defense mechanism, being prey animals.

The veterinary surgeon can administer subcutaneous fluids to help maintain hydration in the sick guinea pig. You can also syringe-feed your guinea pig a mash made from oxbow critical care and warm water, providing both nourishment and fluids. If your guinea pig is willing to eat their regular food, offering cucumber can aid in hydration due to its high water content. However, it is important not to feed too much cucumber as it can lead to diarrhea. Additionally, fresh grass (gathered away from traffic fumes and contamination by other animals) rinsed with clean water can be beneficial. If your guinea pig is unable to eat independently, it is vital to continue syringe-feeding every few hours. Alternatively, your veterinary surgeon may recommend admitting your guinea pig as an in-patient to ensure round-the-clock care and support.