Clickbait title. It's about walking speed which does not tell us about the running speed. The article itself cites researchers saying: "the study authors want

Clickbait title. It's about walking speed which does not tell us about the running speed. The article itself cites researchers saying: "the study authors want to incorporate their flexible tail into models of a running T. rex, van Bijlert said. Maximum running speed for a T. rex is thought to be in the range of 10 to 25 mph (16 to 40 km/h), according to Hutchinson."