I have another one that wasn’t in the survey, but I’ve never seen it before so maybe it’s too rare. Tasha, a terrier mix, rolls onto her back and holds a toy with her front paws while chewing on it. We call her an otter pup.
I thought smiling was as standard as wagging. I remember my animal behavior textbook showing the difference between panting and smiling. Maybe that’s why it’s not in the survey.
Brittney, I like your gymnastic dog. Doing a forward roll!