Earlier we found a snakeskin on the rock island (it is a very tiny island) and put it on top of a boulder that is resting on top of the rock island (you can see it's shadow here). After taking a few shots of the fam, I caught Fox going berserk on the shady side of the boulder. At first I thought he was attacking an insect (he does this), then I thought he found the snake that belonged to the skin. After investigating, I realized it was the snakeskin that he was attacking, it had blown off the boulder and was lodged in this crevice and moving with the wind. He looks particularly fierce in this photo, when in fact, he is pretty docile.