My golden Otis has two different stances: one is all business "I just need to GO" and he squats when that is the case; the other is reserved for walks in the woods or around the neighborhood where he seems to think "Hmmm...I like that little tree, I think I'll take it" and that is when his leg comes up. He will go to the exact same tree on each and every walk in the woods and never fails to amuse me with his choices or his "acrobatics" to get that mark exactly where he wants it. This is a picture of him when he was only about 8 months old.