I now have six dogs, two cats and two kittens and they all think they are litter mates and play all the time The kittens especially go out in the yard and play "tag" with the dogs When my older cats were kittens one of my dogs was a puppy the same age and he used to go up to the kittens and carry them around by picking them up like a momma cat...they didn't mind at all (although it used to freak out visitors that would see a young dog walking around with a kitten hanging out of his mouth ) laurie