I honestly don't understand people who get upset with those who keep parts of their dead pets. If you don't want to keep parts of YOUR dead pet, then bury it, cremate it, whatever. But this is another persons animal, if their grieving process involves keeping the skull/a paw/its tail/whatever, then let them fuckin do it. It's not YOUR animal, YOU don't get any say in what people do with THEIR deceased pet.