Add Yahoo as a preferred source to see more of our stories on Google. A worthy matchup of big teeth, little brains. Picture this: Two dinosaurs with massive teeth and hulking figures circle each other ...

NEW YORK – Scientists have long puzzled over the origins of a mysterious dinosaur excavated in the 1940s: Was it a young T. rex or another type of dinosaur? At first, researchers had only a ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of an adult Nanotyrannus attacking a young T. rex. In the latest episode of a long-standing debate over the ...

Scientists have long puzzled over the origins of a mysterious dinosaur excavated in the 1940s: Was it a young T. rex or another type of dinosaur? At first, researchers had only a tyrannosaur skull to ...

Tyrannosaurus rex is one of the most recognizable names of the dinosaur world, a hulking and terrifying meat-eating behemoth.

This suggests the dinosaurs hunted different prey at various stages of life. The faster juvenile T. Rexes probably chased down smaller, speedier animals, while the slower adults hunted larger, more ...

Cara Tabachnick is a news editor at CBSNews.com. Cara began her career on the crime beat at Newsday. She has written for Marie Claire, The Washington Post and The Wall Street Journal. She reports on ...

A group of researchers has estimated how long it took tyrannosaurus rex to reach its full size — and the time period is significantly longer than scientists previously believed. The dinosaur is ...

Ankylosaurus vs T-rex. The Dinosaurs, narrated by Morgan Freeman, is now playing on Netflix.