To the best of our knowledge images are available by CC.

Learn more about Troodon

Quick Facts
Weight50 kilos
Length3 meters
Height0.7 meters

Troodon was a carnivorous dinosaur that lived in the Cretaceous period 75-65 million years ago. It was small but terrible; it was a fast and intelligent dinosaur. It belonged to a group of saurischian dinosaurs that inhibited North America and Asia. It was discovered in Montana in 1855, which made headlines; at first, it was classified as a lizard, but later, it ended up as a theropod. 

The troodon was a much larger dinosaur than today's modern birds. The name "Troodon" comes from the Greek meaning "wounded tooth" because it had a sawtooth edge. Some experts suggested that they had included plant material in their diet. Troodon had 122 teeth; its main diet consisted of small invertebrates, mammals and reptiles. These dinosaurs were about three feet or more the height of a man's waist. It was 11 feet long and weighed 110 pounds.

It reproduced by laying eggs and was believed to produce a pair of eggs at periodic intervals. Troodon had a large brain for its relatively small size making this dinosaur as intelligent as a modern bird. It ran on two legs and certainly had keen eyesight even at night. It had a sickle-shaped claw, the second claw bone in the shape of an enlarged rectangle and three fingers on its hands for killing prey. 

The troodon had a small hand which was a notable difference in today's modern birds.  

How smart was a Troodon?

The Troodon may be small, but it had a large brain that was proportional to its size and may have been as intelligent as modern birds. They could use it to kill prey and escape predators.

How fast can a Troodon run?

The Troodon was a fast moving dinosaur, it could run up to 30 mph-40mph especially when chasing prey or escaping from predators.

Was the Troodon poisonous?

Yes! A troodon bite can be fatal, it possesses a deadly venomous bite to close a prey.

Is Troodon a Raptor?

Perhaps, its skeleton was similar to a Velociraptor skeleton in Mongolia that was discovered by John Roxton, but was later classified as a Troodon.

Is Troodon a Dromaeosaurus?

No, although recent studies show that Dromaeosaurus is the ancestor of all birds, but in this case it is not accepted. Troodonts are best exemplified by the Saurornithoides genera.

Where did they live?

When did they live?

What was your diet?

Who discovered them?

What kind of dinosaurs are they?

What type of species are they?

  • Holtz, Thomas R., Brinkman, Daniel L., Chandler, Christine L. (1998) Denticle Morphometrics and a Possibly Omnivorous Feeding Habit for the Theropod Dinosaur Troodon. Gaia number 15. December 1998. pp. 159-166.
  • Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. pp. 112-113. ISBN 1-84028-152-9. 
  • Norman, D. B. (1985). The Illustrated Encyclopedia of Dinosaurs. Salamander Books, London.
  • Who is the Troodon
  • Russell, D. A. and Séguin, R. (1982). "Reconstruction of the small Cretaceous theropod Stenonychosaurus inequalis and a hypothetical dinosauroid." Syllogeus, 37, 1-43.
  • Russell, D. A. (1987). "Models and paintings of North American dinosaurs." In: Czerkas, S. J. & Olson, E. C. (eds) Dinosaurs Past and Present, Volume I. Natural History Museum of Los Angeles County/University of Washington Press (Seattle and Washington), pp. 114-131.
  • Currie, P. J. (1987). "Bird-like characteristics of the jaws and teeth of troodontid theropods (Dinosauria, Saurischia)." Journal of Vertebrate Paleontology, 7: 72-81.
  • "Troodontidae". Archived since the original on December 20, 2012. 
  • Fiorillo, Anthony R. (2008) "On the Occurrence of Exceptionally Large Teeth of Troodon (Dinosauria: Saurischia) from the Late Cretaceous of Northern Alaska". Palaios volume 23 pp.322-328
  • Currie, P. J. (2005). "Theropods including birds." In: Currie & Koppelhus, Dinosaur Provincial Park, Indiana University Press, Bloomington. Pp 367-397.
  • Lindsay E. Zanno, David J. Varricchio, Patrick M. O'Connor, Alan L. Titus and Michael J. Knell (2011). "A new troodontid theropod, Thallus sampsoni gen. et sp. nov., from the Upper Cretaceous Western Interior Basin of North America.". PLoS ONE 6 (9): e24487. PMC 3176273. PMID 21949721. doi:10.1371/journal.pone.0024487. 
  • Fiorillo, Anthony R. (2008) "On the Occurrence of Exceptionally Large Teeth of Troodon (Dinosauria: Saurischia) from the Late Cretaceous of Northern Alaska" Palaios volume 23 pp.322-328
  • Varricchio, D. V. (1993). Bone microstructure of the Upper Cretaceous theropod dinosaur. Troodon formosus. J. Vertebr. Paleontol. 13, 99-104. JSTOR 4523488
  • Molnar, R. E., 2001, Theropod paleopathology: a literature survey: In: Mesozoic Vertebrate Life, edited by Tanke, D. H., and Carpenter, K., Indiana University Press, p. 337-363.
  • Rothschild, B., Tanke, D. H., and Ford, T. L., 2001, Theropod stress fractures and tendon avulsions as a clue to activity: In: Mesozoic Vertebrate Life, edited by Tanke, D. H., and Carpenter, K., Indiana University Press, p. 331-336.
  • Varricchio, David J., Horner, John J., Jackson, Frankie D. (2002) "Embryos and eggs for the Cretaceous theropod dinosaur. Troodon formosus." "Journal of Vertebrate Paleontology" 22(3):564-576, September 2002,
  • Horner, John R. (1984) "The nesting behavior of dinosaurs." "Scientific American," 250:130-137.
  • Horner, John R., Weishampel, David B. (1996) "A comparative embryological study of two ornithischian dinosaurs - a correction." "Nature" 383:256-257.
  • Varricchio, David J., Jackson, frankie, Borkowski, John J., Horner, John R. "Nest and egg clutches of the dinosaur. Troodon formosus and the evolution of avian reproductive traits." "Nature" Vol. 385:247-250 16 January 1997.
  • Varrichio, David J. Moore, Jason R. Erickson, Gregory M., Norell, Mark A. Jackson, Frankie D., Borkowski, John J. (2008) Avian Paternal Care Had Dinosaur Origin. Borkowski, John J. (2008) Avian Paternal Care Had Dinosaur Origin. Science 19 December 2008 Vol 322, 1826-1828 DOI: 10.1126/science.1163245
  • Cosmos: Smartosarus
  • Darren Nash; Tetrapod Zoology: The Dinosauroid revisited.
geological time 3

Fun Facts

Hi kids! Here are some fun and exciting facts about Troodon.


  • Troodon is the Greek term for "Wounded Tooth".
  • Troodon had a big brain and was more or less intelligent.
  • Walked on two legs or on a biped.
  • Troodon possessed advanced binocular vision that helped him to hunt.
  • Troodon produced a couple of eggs at periodic intervals.

More to Explore!


Pin It on Pinterest

Share This