When I was rescuing, I gave the rescues heavy cream that I warmed in the microwave to put fat on their bones while they lived outdoors. My vet said that it was ok because not all cats are lactose intolerant and they didn't drink all that much. It was shared by quite a few cats. My cats sure aren't lactose intolerant. They can't wait for me to put the bowl down on the floor to lap up the skim milk when I'm finished eating my cereal. Every cat is different, I guess, just like people. I wouldn't give them a lot of it, though, just to be safe.