Pet Rats

I had rats and they never got sick until they were super old, at which point they both got a little sick, then dramatically worse the next day or so, and then died, so the vet bill was zero. The thing I wish I'd had more money for was a better cage - in hindsight, theirs was just ok, but I was also like 12. If I got some now, I'd give them a way better set up, but I'm somehow on about a 20 year streak of adopting dog breeds bred to hunt rats so no dice.