A friend rescued a very sweet cat from a shelter around two years ago. In that time the cat has never been to a vet, and has been massively overfed, but ignored/starved of affection at other times. In fact pretty much all she does with the cat is fill her bowl with treats. When she told me today that she was moving house and didn't want to take the cat with her and was going to be returning her to the shelter I just mentioned how sad that was (although maybe the cat can be readopted into a family that will take a little more care of her). I've just had my head bitten off by said friend who says if the shelter chastises her for lack of vet visits and overfeeding, she is just going to tell them to *&$% off.