I think it's taking a step and that's the foot you see. I don't know it looks like I can see the short tail in its entirety with a black tip, which looks like a bobcat tail...To me, it looks like the tail wraps wraps around the right leg and comes up along side the animal.
To me, it looks like the tail wraps wraps around the right leg and comes up along side the animal. Plus, mountain lions have tail and leg markings in their youth.