Lactose Intolerant

Being lactose intolerant is a fairly common thing amongst humans. People work around it and either take medicine to be able to eat milk products or just avoid them all together. But what do animals do if they are? Is it even possible for other animals besides humans to be lactose intolerant? The thought of a cow being lactose intolerant is more than a bit ironic, but could it happen? Animals rely on the milk from their mothers to survive as babies. So I suppose it couldn't happen, but then again human babies are technically supposed to only be able to live off their mother's milk. But humans have the option of using formula for babies. So I guess my question is what would a cow do? Would they just suffer with the pain of being lactose intolerant until they can live on grass? Or would they just die?