The frogs can puncture their own skin with sharp bones in their toes that they then use to claw their attackers, David Blackburn and colleagues at Harvard University reported.”It’s surprising enough to find a frog with claws
“These nodules are also closely connected to the surrounding skin by dense networks of collagen,” Blackburn said. “It appears they hold the skin in place relative to these claw-like bones, such that when the frog flexes a…
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