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The Deadly Thumbs of Japanese Flick Knife Frogs

The Japanese Otton frog (Babina subaspera) may look harmless, but don’t be fooled by its ordinary green, warty appearance. This frog carries concealed weapons. A new study has discovered that the Otton frog has sharp retractable claws that shoot out of its thumbs. The rare frog, native to the Amami islands of Southern Japan, uses…