Murphy does that when he's ready to play with his sister, Chelsea. He does his bullfight moves then turns and puts his butt right in Chelsea's face. Sometimes his front paws will bounce off the ground and he'll spin in a circle, then he goes back into his bullfight stance. He backs up a few steps, creeps forward a few steps - always kicking those hind legs like a big bad bull. It is so CUTE!! I always stop what I'm doing to watch whenever he does this.
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He is your friend, your partner, your defender, your dog. You are his life, his love, his leader. He will be yours, faithful and true, to the last beat of his heart. You owe it to him to be worthy of such devotion. -- Author Unknown