Yup - we get the flying fluffies around here. One of them (usually Mitzi) will decide it's playtime and they're off to the races, chasing each other. Mishi tends to get a bit rough; he has no concept of the fact that he's big, so little Mitzi has to put him in his place, which she does quite well - usually by whopping him upside the head with her Mitzi-mitts - the little minx!