bereftTethys passed away this morning.
It was not particularly dramatic. She was about three years old and ill, so she'd been moving slower and slower over the last few months, and this morning she stopped.
It feels weird not having a rat in the house. My ecology is insufficiently complex. :(
We're planning to hang on to the cage, though, since we figure we probably won't be off rats forever. They do make excellent kids' pets....
Three years is impressive, so whatever you did worked pretty well.