My Pictus Cat and African Featherfin Cat love to fight. They roll around in a ball looking like cats in those old cartoons were the fight turned into a dust ball. But there is never ANY damage, not a torn fin, missing scale and thankfully no missing barbels. And then other times they lye together and search for food together, this is actually how it is most of the time. I'm wondering if this is possibly just them playing or if one is trying to assert dominance over the other.
