When threatened, a few African frogs can morph toes into claws

At least 11 species kick at predators with sharp, protruding bones as a defense mechanism
Biologists at Harvard University have determined that some African frogs carry concealed weapons: When threatened, these species puncture their own skin with sharp bones in their toes, using the bones as claws capable of wounding predators.

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All News summaries for June 23, 2008