T-rex couldn't run but could have walked at 27 kmph: Study

A UK-based study claims the Tyrannosaurus rex's sheer size meant it couldn't move at high speeds, and running attempts would've simply broken the dinosaur's legs. Researchers simulated moving dynamics of T-rex and found it peaked at 27 kmph for maximum stress limits. The findings suggest the dinosaur couldn't pursue its prey in a high-speed chase as previously thought, researchers said.