The Wolverine Frog

Frogs have claws but in a really gross way. They are made out of little bits of bone, which are attached to the end of their toes with muscles and collagen. So when the frog gets stressed out, contracts a muscle, the muscle breaks the claw off the tip of the frog's bone. It then pierces through the frog's skin and then shows up. "It just looks really gross," he says.

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