Teeth tax

Extra money you have to spend to fix, replace, upgrade etc. because of a pet's destructive teeth
Teeth tax is commonly needed when owners have a dog that rips up its toys and you have to get the kind of toys that aren't easily destroyed, the extra money needed for these "high quality" toys, is Teeth tax

Another reason you'd need to pay teeth tax is when a pet chews up a personal belonging and it needs to be replaced

"Dang it! My ferret chewed up his hammock last night, and I'm not in the mood to pay teeth tax to get a new one!"