With the recent heat, we're taking it easy on the boys when playing them and their teaser. We keep it out play periods shorter, and I don't encourage as much climbing in pursuit of feathers and pom-poms as I usually do.
Billy has still been panting several times, with his little tiger chest heaving. Always the Mighty Hunter, however, he'll let Whitey spell him for a couple of rounds and then jump back in the game.
Given that he jumps back in before he's actually properly recovered, we'll taken to calling the game before he keels over.