[Teacher317]

If that’s a long tail behind it, I’d obviously be rong, but I believe it’s a partly buried hind leg.

It has 3 hind legs? Sorry, that's a tail.

[dangus]

I see a left hind leg, a right hind leg, the start of a tail, and a continuation of something after the right hind leg intersects with the start of a tail. That continuation is either the tail, or more of the second leg. Although it’s possible that the creature is on top of the bottom portion of its own leg, I believe the “tail” is the remainder of the leg.