Deinonychus belongs to a family of dinosaurs called dromaeosaurs.
Known from more than nine skeletons, Deinonychus is the dinosaur that sparked the debate about whether dinosaurs were warm-blooded or cold-blooded. Deinonychus had a killer claw on its hind foot to slash its prey and a stiff and straight tail to help balance its light, bird-like body.
- Pronounced: die-non-ee-kuss
- Means: Terrible claw
- Where: North America (Montana, Utah, Wyoming)
- When: Early Cretaceous
- Diet: Carnivorous (other dinosaurs)
- Size of Adult: 10 ft (3 m) long
- Size of Fossil Dig: L 8 ft (2.44 m), H 7 in (0.18 m)