The Hairy Frog
The hairy frog, alone, is quite a sight to behold. The males in particular are known to grow some hair along the sides of their bodies during mating season. But that’s not the only thing that makes this frog stand out from the rest. Think Wolverine from the X-Men. This frog is capable of breaking its own bones in order to create claws that it uses to fight off other frogs or predators. It’s unknown if these claws break off or retract back into the toe pads where the tissues can be regenerated because no live specimens have been studied.