It has been my experience that it depends on the cat. I have had vet's tell me that milk causes worm's, that it causes UTI ( urinary tract infections), but again most cat's are lactose intolerant. I know that my Jazzi loves milk but she gets disintary and starts to vomit with in ten min of consumption. So if it was up to me I would say no!!! But I am just a loving Momma. As for the momma cat I have always been told to let them eat whatever they wanted with in reason of course.... I figure if she eats it she needed it if not then ok.