Just wondering. Dynamo did this twice in a row today, marking up a tree like a boy. She's five years old and spayed. Usually, she just 'power pees', which is what a call that deliberate butt squat that the girls do when they mark, but today she got the whole leg lift and aim thing going. I had another female that did that. Is it common? I'm just curious. I really couldn't care less which way my dogs go as long as it misses my floor and my legs.