The African Hairy Frog has a peculiar self-destructive ability that allows it to snap its toe bones when threatened to create bone claws that pierce its skin just like Marvel’s Wolverine.

Trichobatrachus robustus, aka the Hairy Frog or the Wolverine Frog, is one of nature’s strangest creatures. The males grow thin, hair-like skin threads on the sides of their bodies and their hind legs, a unique ability that scientists believe helps the amphibians absorb more oxygen. These “hairs” contain arteries and are thought to increase the surface area for the purpose of absorbing oxygen when the male guards the eggs in the water. But this is not the weirdest thing about hairy frogs. They also have an unusual self-defense mechanism that allows them to snap their toe bones and turn them into sharp claws that pierce their skin.