Perhaps the most fascinating fact about the hairy frog is its formidable, hidden claws. Wolverine, a character in the Marvel movies, can extend sharp claws and then retract them. His claws pierce ...

In nature, the ability to survive is usually determined by an organism’s speed, camouflage, and poison. However, one frog species is even more radical.

When threatened, hairy frogs break toe bones to form sharp, temporary claws that pierce through their skin for defense. Males sprout blood-rich, hair-like filaments during mating season, boosting ...