It might be worth contacting another vet (who is). "Just lost my elderly guinea pig this evening, this article helped me to care for him throughout today, as my vet Guinea pigs are a prey species, which means they try to hide when they feel unwell or sick. He sometimes hits his head when he popcorns. Or if you would rather do it yourselves, you can use a Carbon Dioxide Chamber. "This article came from a place of medical knowledge and compassion. "This helped a lot when my guinea pig Ginger Snap passed away. was fully booked today and they could'nt see him until tomorrow morning! My little sister's guinea pig is a walking sack of bones. Do you know what the treatment was for her feet? These habits, however, can sometimes get them into trouble. Even if it was a tiny amount and there isn't much of a risk, you should still watch for any side effects and symptoms. With her illness, she wouldn't have had much longer. Feed him/her with them sitting in your lap. You can make his passing less uncomfortable by offering him water from a spoon, syringe, or water bottle.