What do you feed them? I am yet to go back to the vet, but my cat is having trouble peeing again (follow on from thread 2wks ago, which is now missing )My cat was peeing blood, got put on antibiotics for UTI, stopped peeing blood, was all good, now he has been off antibiotics for a week, he is having trouble peeing.. I called the vet and made an appointment for the morning. (I would have taken him today, but he is still peeing although it is uncomfortable for him, and I know it's awful but if it's not an emergency I can't afford to pay in excess of $200 today) So anyway, I spoke to the vet I saw 2wks ago and he said he may need a diet change. So what would I give him? Purina?, Hill's what other cat food is there especially for this type of thing? My poor baby..