Please help, my rat has a respiratory infection and has been to a vet and is taking antibiotics and an anti-inflammatory medicine. He is recovering and is his usual self. As this morning when greeting my rat he was excited and friendly as usual, until he climbed to the top of his cage I was horrified to see a good 2 inches of the end of his tail is literally shredded into many independent pieces a horrible dark blood red and just completely chewed and shredded. Although he doesn't seem to be in pain at all which is strange. It's so incredibly graphic i felt like i was going to puke. How is this possible? How can a tail even become like that. I took him to the vet instantly and he seemed unbothered and just said either him or the other rat i have must of chewed it. He gave no reason as to why this could be or how, and so he will have it amputated once his respiratory infection has gone hopefully. Has this ever happened to anyone before? I'm just looking for answers as to why a seemingly happy healthy rat could have done this?