Brachylophosaurus canadensis is a mid-sized hadrosaurid (duck-billed) dinosaur found in the Upper Cretaceous sediments of North America. One of the more notable features of this animal is the bony crest for which this animal was named. It reached lengths of about 30 feet (9 m) when fully grown. Brachylophosaurus was first discovered in Canada in 1936. The Judith River Formation in Montana has since revealed many relatively complete and intriguing specimens. The Judith River formation in Montana is 75 to 78 MYA.

CHEWY is an adult partial skull exhibiting distinct evidence of predation. Tooth gouges are present on the outside, posterior end of the dentary. These deep gouges are evidence of the immense, powerful jaws that created them, most likely the work of a tyrannosaur know as Daspletosaurus, the largest predator of its time. In paleontology we are always looking for evidence of action and interaction among dinosaurs, as these are the keys to unlocking the secrets of behavior. Brachylophosaurus canadensis would have been an alluring target for the predators of its day.

Note: some portions of the original fossil may have been scientifically restored.