I was just wondering if it was normal for my little 2 month kitten and my 2 year old cat to play tag. When I let the kitten out of her room, there is some hissing and growling during the chasing, but the kitten seems to enjoy it and there has been no blood shed. The older cat bats at the kitten, but doesn't hit her. Is this for fun or should I be worried because this is aggressive behavior? Other times, they could be looking out a window together calmly. I can't figure it out.