Standing at a staggering 6.5 ft tall and about 20ft long, Utahraptor was the largest of the Dromaeosaur ("raptor") family. It dominated the early Cretaceous forests of what is now the state of Utah, USA. This formidable carnivore was equipped with many deadly adaptations for hunting, including binocular vision and razor sharp teeth. The main weapon of Utahraptor, however, was a large specialized claw on the second toe. This retractable sickle-shaped claw measured around 12 inches in length. Combining speed, intelligence, and accuracy, Utahraptor could easily slash, tear and rip apart prey, making this dinosaur an early "Jack the Ripper."