Puffing cheeks

The dog has its mouth closed, and as it breathes out, puffs out its lips and cheeks briefly.
(Capra, 2011)

VIDEO

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This Pit Bull was seized and removed from a clandestine dog fighting operation. Here he was filmed during a learning session. He is sitting in front of the trainer, who first shows him food, the shows him a muzzle. The dog stretches his neck toward the food, puffing his cheeks, and licks his nose. He then moves his head toward the hand holding the muzzle, avoiding looking at the object, then looks again at the food and puffs his cheeks. After puffing his cheeks again, he tries to interact with the object, licking his nose, and is reinforced for the behaviour.

playing with objects<>pulling on leash