Whenever I do Downward Dog, Jimmy does it to - it's pretty cute. Barley, the foster dog, on the other hand, would nose a ball into the place most likely to hurt the most when I moved out of a pose. He is very precise in his placement (he's discovered that if he does this right, I'm more likely to get frustrated and throw the ball - which is the goal). I have to ban him from the room if I'm doing any kind of step aerobics. :P But to go to class for it? Jimmy would be more interested in the other dogs than in yoga. But if it works for you, why not?