Hairy Frog aka Wolverine Frog
While some frogs are great as pets, Hairy Frogs may not want to be your friend. These little guys who are roughly 11 cm are commonly found in Central Africa and are not your average friendly green frog. They have the interesting ability to break their own bones and create talons through their toe pads which appear when they feel threatened. Thankfully though the damaged tissue eventually regenerates once the claws are retracted.
Unfortunately these creatures are endangered an almost extinct due to deforestation and their loss of habitation.