Aww, that's a really cute story. Your dog was pretty smart. Living with me now is Isaac, one of my dogs. About a year ago when my family and I still fostered cats, we brought home four five week old kittens. One evening, Isaac happened to get into the room where the kittens were. When we found out, Isaac lying on the floor with all the kittens climbing over him. We let Isaac in again the next day with us supervising. He would lick and carry them around the room to the food dish, to the litter box. Like your dog did. It was the cutest thing.