We all know about the cheetah's electrifying speed ... zig-zagging prey, and claws that never fully retract help it to maintain traction on the ground. But speed alone is not enough, and an ...

Acinonyx means "unmovable nail" in Greek. Although all cats have retractable claws, a cheetah's claws don't entirely retract, which helps them get better traction at those high speeds. According ...