What’s happening to my guinea pig? My guinea pig Chester is usually a very energetic and healthy guinea pig, but ever since his cage mate passed a few days ago he has been lethargic and depressed. He stopped eating and pooping so we brought him to the emergency vet and they said he has the beginning of G.I. Stasis and we’ve been giving him meds, belly rubs, syringe feeding, and movement but he is still is lethargic. One of his eyes is bloodshot since yesterday. We bought another guinea pig a couple days ago so he wouldn’t get lonely but he has been grieving the cage mate he was very close with. I know they grieve but what’s happening?