I have a 5 year old female calico named Clover and a 13 week old male tuxedo named Tyke. He is not neutered yet. They play rather rough. A few times I have heard the kitten yelp, but they tumble on the ground and maybe it just LOOKS aggressive to me. There is no hissing, growling or spitting which is a good sign. I know they dont hate each other because I have caught them sleeping next to each other a few times, and they sniff each others noses. Will the rough play get better when he is fixed or is it just a kitten thing or is it both? Please help!