The dog exhibits all evidence of canine bliss, eyes closed and tongue lolling. He squints up at her and enjoys the scratching shamelessly for several long moments. But eventually he does get to his feet, licking one of her hands with his big tongue before backing off a few steps.

The dog bows low with his forelimbs stretched out in front of him, then bounces up onto his hind legs-- and up, and up, body shifting and reconfiguring from a big fluffy white dog to an even bigger man with black hair as almost as fluffy as the dog's fur.

Hi, he signs, his body language nothing so much as sheepish.