I am so sorry to read this. We had a group of 10 girls at work and we lost them simulatiously to the same thing. Sadly being descendants from lab rats it’s the usual cause to their end. I hope that he continues to live a long life with you and that you can make the overal decision :( I’m just so sorry. A true pet owner is one who can put the animals needs above their own and already you show that.
RE: My Sweet Rat Tofu ❤️