Hello. One of my guinea pigs had surgery yesterday. She had to have a toe amputated (vet said it was either an injury or a tumor). She's recovering nicely so far, but when we attempted to put her back in the cage, her cagemate became aggressive and actually tried to nip at the injured foot. We have them in separate cages near one another now, but I am starting worry that they may not be able to cohabitate again. There have always been scuffles, and the injured guinea pig is the submissive one. Has anyone experieced anything like this? Thank you so much for your help and advcie. The piggies are both 5 years old and we have had them for 3 1/2 years.