A new study of Tyrannosaurus rex's muscular tail suggests that the dinosaur was one of the world's fastest-moving hunters. Subscribe to read this story ad-free Get unlimited access to ad-free articles ...

Get unlimited access to ad-free articles and exclusive content. LiveScience Feathered dinosaurs might have used muscular tails to shake tail feathers and lure the opposite sex, researchers say.

We explore the incredible strength and athleticism of kangaroos - animals built for power, speed, and survival. From their massive hind legs to their muscular tails, every part of a kangaroo’s body is ...