Sick pets can be annoying, but they're practically IMPOSSIBLE in rotational play

I can see where this could be a real issue. I don't have saves where multiple families have pets and I'm glad. I do enjoy them but the first thing I do is give them a bath and sometimes take them to the vet. I do load those families up on wellness treats also. I don't know what can be done about because personally I wouldn't want a mod that takes that away the need to bathe and sickness completely. I do kind of wish your pet would start off clean when you rotated to them though.