I cut Cali and Diego's nails. Cali could really care less, it's just extra cuddle time with mommy and there's always a whiskas treat in it for her afterwards. I swear that girl will do anything for a whiskas. Diego on the other hand hates to have his nails cut. He gets squirmy and even growls a bit. But I don't give up so easily and eventually he's sporting a lovely peticure!! And he doesn't mind taking the whiskas treat afterward either.