Weird hind leg?

[TaikiKago]

Alright, so the more I look at Delmar, the more I notice how odd his little hind leg is. So I snapped some pictures this afternoon of him (also included a pretty cute one, couldn't help myself..).

I think you can tell it's the one on the right. It doesn't fold completely againt his side like the one on his left and always sticks out like that, yet he gets around with no problems at all. Any ideas why his little leg is like that? The angle is just so weird to me, it looks really odd..