Poor sim I know how it feels..Josie was really sick before too..she was constintly throwing up (for weeks) and the vets still don't know wht it is, but the many many pills seemed to have helped and shes fine now. I'm sure once Sim takes all his pills he'll be fine too! As for the butt rubbing thing, I'd say thats anal glands? Jo had that too..the reason she hates the vets now actually..she hated having them expressed..