Which Limb Hurts, or Do All Three?

I first observed that there was a left back-leg injury as seen in this video, but over the course of a couple of hours, three different limbs were held up at various times, as seen in the photos below.

It could be that this two-year-old stressed her forelimbs as she moved about on only three due to the back-leg injury. Or, could she possibly have stepped into a field of thorns, or something like that, which might have affected all of these limbs, and the front limbs only minorly? Or, is it possible that she could be holding up a front paw to let all the other coyotes know that she has been injured? I say this because I know of dogs who switch the leg they hold up even though only one leg was hurt (in one case it was because the bandage was changed to the other leg!) I don’t know the answer.

Only the back-leg limp persisted for longer than the day. Full weight was applied only gradually at the end of a week and soon she was fine. I’ve noted that limb injuries are not that uncommon in coyotes.