Hairy Frog
Weirdness 10/10

The horror frog that breaks its own bones to grow claws

This frog defends itself by deliberately snapping its own bones and pushing the sharp ends through its skin.

📋 Fact File
🐾 Amphibian🍽️ Carnivore (insects, slugs and other small prey)
📏 Size
About 9-13 cm (3.5-5 in) long — males are bigger than females
About as long as a soda can is tall
Lifespan
Up to about 10 years (an estimate — it is little studied)
🟢 Least ConcernWidespread in Central Africa and doing fine for now, though local people hunt it for food.
🤔 Guess first

Which one is REALLY true about the Hairy Frog?

The short version

The hairy frog of Central Africa grows hair-like skin strands to absorb extra oxygen while guarding eggs, and when threatened it breaks the small bones in its toes and forces the broken ends through its skin to form claws — like Wolverine.

Why it's so weird

  • The Hairy Frog breaks the small bones in its own toes and forces the sharp broken ends out through the skin of its feet to form claws.
  • The Hairy Frog contracts a muscle to snap those toe bones on purpose, only when a has already grabbed it.
  • The Hairy Frog grows strange hair-like strands of skin along its body during breeding season, packed with tiny blood vessels.
  • The Hairy Frog uses those skin hairs to soak up extra oxygen while the male stands guard over his eggs.
  • The Hairy Frog is one of the only animals known to build weapons out of its own skeleton, which is why people call it the horror frog.
📏 How big is it, really?
Hairy Frog
11 cm
Hairy Frog
a 7-year-old
1.2 m
🧒

You could line up about 11 of them along a 7-year-old!