We had a minature poodle in our family that used to urinate by balancing on his front legs-- it was the entertainment of all of or friends- not sure how that came about, my father found him abandon beside the road one day and he was thereafter my fathers dog to the end.He has great balance. He stepped out last night on his front feet and balanced with his back feet of the ground for a couple of seconds then they went down and off he went.