Sam (Affectionately known as Thumper!)
Our third fostered Lab was Sam a yellow boy who we nick-named 'Thumper' because he often thumped the ground with his tail when wagging it :-).
Sam used to lie on his belly with his legs out behind him in what we call a frog leg position. Always nice to see a dog that is able to do this as it often means there is no problems with their hips!
We noticed and reported behaviours that indicated that he was exhibiting dominance aggression, so sadly he left our home early and was returned to the head honcho in Lab Rescue.