I had just gotten two GPs as a givet for my birthday but then suddenly one of them died. One moment Bree was all fine and running about with her friend Coco but when I checked in fifteen minutes later, she was all floppy and it was like she didn't have any strength to hold her little piggy body up and I didn't know what was happening so I tool her to the only 24/7 open vet clinic in town but she started having seizures halfway there and then they seizures started getting less and less violent and the doc(not a guinea pig expert) checked her temp. And gave her two injections for hydration and strength and said to monitor her and keep her warm, like put her on a heating pad. At this point she was barely breathing and died in a few hours even after the blanket and heating pad. My other GP, Coco was fine she didn't even mourn much but I started taking extra care of her I showered her with attention and care all day yesterday and she was completely fine and seemingly happy when I went to sleep but she was lying on her side when I woke up and checked and she was already dead she outlived Bree but only by I day. I don't understand why. What could've gone wrong I took the best care possible. I know hay is their priority food and I didn't have it and I doubt the person who sold them to my boyfriend provided them with hay either so I would just give them greens and fresh veggies and they'd drink water and poop and pee normally.