By playing? For the young T.rex, this means fighting dinosaurs his own age! Who's the strongest? Researchers have discovered that prehistoric lizards fight each other as early as 10-12 years old. At that age, they were only half the size of a fully developed T. rex, but twice as daring!
With movable lower jaw!
Dimensions: 9.02 x 6.5 x 6.89 inches (W x D x H)