All things considered, both Sam and Bubsy seem perfectly content with this situation. Its very possible that some of that wing waggling could be interpreted as the equivalents of a wagging tail as the ornithopter happily accepts the attention, not quite to the point of trying to knock his new friend over.

"He's one of a kind. He was made by a guy named Dr. Mitchell, but ending up smart as he is was sort of an accident. As for what he can do, knows a couple dozen commands, herds like a pro, and if you trust your grip, I bet I could ask 'im to take you flying."