My Chewy lifts up her leg when she pees, because she was trained on papers, and she didn't want her feet to get wet! lol She still does it when she goes outside, too. Too cute! And, she does the best "potty dance", usually after she goes poo, but when she's outside, she'll do it at any given moment. We have always encouraged her to do it, clapping our hands, yelling out "yeah, do the potty dance", "whooo hooo", and she does it more! lol. Tooooo funny!
