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Frog Resembles X-Men's Wolverine
sciencehabit writes "Scientists have discovered a frog with retractable claws that pierce its skin every time they come out. What's more, the researchers believe the frog heals itself after pulling its claws back in."
You mean like this?
Males of the species, which grows to about 11 centimetres, also produce long hair-like strands of skin and arteries when they breed.
Those who open their minds too far often let their brains fall out.