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The male Central African hairy frog has the rare ability to extend bony claws from the toe pads on its hind feet. He tenses a muscle connected to the claw, and the sharp point breaks through the pad's bottom. The claws may be for defense or to help the frog keep its grip.

The male Central African hairy frog has the rare ability to extend bony claws from the toe pads on its hind feet. He tenses a muscle connected to the claw, and the sharp point breaks through the pad's bottom. The claws may be for defense or to help the frog keep its grip.

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