Sickle claw

the Sickle Claw is a Dromaeosaurus (running lizard), a small carnivore the size of a wolf, about 2 m (6 ft) in length and 15 kg (33 lb) in weight. Its mouth is full of sharp teeth with a bite nearly three times as powerful as that of Velociraptor, and it had a sharp “sickle claw” on each foot. They have remarkably large eyes and excellent vision as well as a good sense of smell and hearing. Its neck is curved and flexible and its jaws are solidly built. The tail is flexible at the base but sheathed in a lattice of bony rods; this allows it to be carried in a sharply upturned position.

http://en.wikipedia.org/wiki/Dromaeosaurus

Sickle claw

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