Sparky sits like the Pug Pic too - always has - even before he had a knee problem. I presume he just likes to sit that way, and not on the tush, since he doesn't like a cold or wet bottom. He's funny to watch outside, especially in the cold weather. Sometimes he forgets and starts to put the tush down on the cold ground or patio, but it comes back up really quick! Sissy.........