For example, when a grown-up walks the distance between his or her legs is about two or three feet. When he or she runs it increases to four or five feet. Scientists believe that Tyrannosaurus and Allosaurus could run faster than a man. Very big dinosaurs, called sauropods, and armored dinosaurs probably were not so fast. They depended on their size and the armor they had to protect them against these attackers.
Smaller kids are faster and do more than, say, adults.
Yes, it is possible that the Tyrannosaurus rex and his relatives evolved into today s modern birds. With the exception of birds, dinosaurs all stopped living about 65 million years ago. This is a mystery that has been debated many, many years. I do not believe anyone really knows. Pirate at your own risk.