Hairy Frog

Insects and perhaps certain mammals typically have hair and fur, while amphibians and reptiles hardly ever do. The hairy frog, also known as the Wolverine or horror frog, is an exception. The males of these frogs, which grow about 4 to 5 inches long, develop what seem like hairs on their sides and their thighs during the breeding season. They have arteries that enable the frog to absorb more oxygen, therefore they are actually dermal papillae rather than hairs. They function quite similarly to the tadpole-stage frog's gills.

The fact that this frog has retractable claws, like Wolverine, is another peculiar feature of it. The frog must break the bones in its own toe and allow the claw to rip through its skin in order to evert its bone-based claws. The West African countries of Cameroon, the Democratic Republic of the Congo, Nigeria, Gabon, and Equatorial Guinea are home to this frog. The frog is hunted and consumed even though it is not endangered.