Deinonychus was the real star in the Jurassic Park franchise. Deinonychus was the Velociraptor in Jurassic Park although the name didn`t sound scary enough for the producers to change the name to Velociraptor. Deinonychus had a special place in the dinosaur fossils the “dinosaur renaissance” Deinonychus was the first specimen that opened the debate of where dinosaurs were cold-blooded or warm-blooded.

What Does Deinonychus Mean

Deinonychus means “Terrible Claw” founded by Ostrom, in 1969. Deinonychus got his name because of the massive claws on the second toes which were 13 cm (5 inches) Not the biggest claw in the Dromaeosaurid family that title belongs to the Utahraptor.

What Did Deinonychus Look Like

Deinonychus walked on two legs. Their huge claws played a huge role in their hunting allowed them to penetrate the vitals of the prey and holding the prey down while eaten alive. Deinonychus basically look like a scaled up version of the Velociraptors.

Deinonychis what it looked like

Live reconstruction of an Deinonychus.

Where Did The Deinonychus Live

Deinonychus fossils were recovered at Cloverly Formation(CF) and Antlers` Formation(AF). Antlers Formation represents a low-lying floodplain. The fossils found in the CF and AF suggest Deinonychus preferred tropical forests, and wetlands.

When Did The Deinonychus live

Deinonychus lived in Early Cretaceous period, 115-108 million years ago.

What Did Deinonychus Eat

Multiple Deinonychus fossil groups were found near Tenontosaurus in the Cloverly Formation. This held a precise hint on certainly Deinonychus did feed on Tenontosaurus.. The Cloverly and Antlers’ formations’ prevailing terrestrial herbivore is Tenontosaurus. The primary meal of Deinonychus was believed to be Tenontosaurus and Zephyrosaurus. It`s quite difficult to recognize such a small predator was able to hunt a 1-2 ton herbivore. This raised questions among Paleontologist and hinted was there some sort of group hunting behavior between Deinonychus, or maybe these were signs of scavenging behavior.


Medium-sized herbivore grown up 6.5 to 8 meters (21 to 26 ft.) and 3 meters (10 ft.) in length compared to the Deinonychus these herbivores were quite the size. Paleontologist believe this kind of primary diet allowed them to understand more of their social behavior. A single Deinonychus taking down a Tenontosaurus was quite unlikely therefore it is believe Deinonychus had some sort of pack hunting behavior.


Compared to the Tenontosaurus, Zephyrosaurus was more of a small-sized herbivore, Zephyrosaurus was easy meal for the Deinonychus

Deinonychus Claw

The claws of Deinonychus could reach up to 13 cm (5 inches) . Mainly used in pinning down their prey and studies shown they were better at grasping than hitting the killing blow. Paleontologist found that their claw did not touch the ground, and theories suggest the had to be kept sharp and contacting the claw with the ground would have made it dull and be a huge problem for the Deinonychus.

Deinonychus Bite Force

Gignac, Paul M, estimated the bite force to be between 4,100 and 8,200 newtons(Source) “These values are higher than those reported for large carnivoran mammals but similar to values recorded for comparably sized crocodilians.” -Gignac, Paul M

Did Deinonychus Have Feathers

The dromaeosaurids such as Velociraptor and Microraptor has confirmed being covered with feathers, and Paleontologist agrees that most of the dromaeosaurids family was covered in feathers, although no direct evidence has been found for the Deinonychus.

Studies have shown that wings-like structure was present and provided the Deinonychus to grasp and used its wings to flap and balance while pinning down their prey including the stiff tail allowed them to have greater balance.

Did Deinonychus Hunted In Packs

Debated for decades theories and evidence of social behavior such as grouping and pack hunting. There was evidence of grouping of multiple fossilized teeth that were found near a Tenontosaurus fossil, and paleontologist agrees there was somewhat grouping behavior. No conclusion on if they were pack hunting or showing more of behavior such as the feeding frenzies of today’s Crocodile and Komodo dragons little cooperative activities among these modern species suggest that this has might have been the case with the Deinonychus.

The dietary difference was found during a study pointing out that juvenile and adult Deinonychus had consumed different prey, suggest Deinonychus never cared for their younglings, and allow us to certainly understand there were no pack hunting behavior.

How Fast Can Deinonychus Run

10.1 kph (6 mph) is concluded during the Studies of Canadian dinosaur footprints by Richard Kool.

Deinonychus Size(Height and Weight)

Studies shown Deinonychus could reach to 3.4 meters (11 ft.) in length and 0.87 meters (2.9 ft.) in height.