The unusual amphibian known as the "hairy frog" employs a remarkable method of defense: it intentionally breaks its own finger bones, which pierce through the skin and turn into sharp claws resembling those of a cat.
These natural "weapons" can inflict deep lacerations — this is known by hunters from Cameroon, who have learned to catch this creature while avoiding injuries. Remarkably, the frog, like many other amphibians, is capable of regenerating damaged tissues.
During the breeding season, males develop strange "hairs" — in fact, these are thread-like growths with blood vessels that help them better saturate with oxygen while caring for their offspring.
A similar extreme defense mechanism has been observed in the Spanish ribbed newt, which protrudes its ribs through the skin and secretes venom to deter predators.
