Kilby'sMum
Super Boxer
Yep i agree, sounds like typical boxer play. Our girls do a lot of mouthing (and usually make a strange "wookie" sound while doing it) during playtime and the bum up in the air thing is a surefire sign that one of them wants to play and is just trying to engage the other one. Boxer play can be too full on for a lot of dogs (a lot of the labs we know won't tolerate them at all) but I'm sure if the huskey objected he'd let your boxer know.