Animal life span, often associated with growth patterns. Limit the growth of non-restricted animals compared with the growth of animals and long life. If we are animals of the non-limited growth models for the study of dinosaurs, some taxa of Dinosaurs hatched from eggs to adulthood out of time required are: Protoceratops need 26 years -38 years, medium-sized sauropod dinosaurs need 82-118 years, the giant sauropod, such as the Brachiosaurus, you need a hundred years . So, if the length adult dinosaurs, and then be able to live on the same length of time, Brachiosaurus can live 300 years or so. Another issue affecting animal growth factor is the speed of their metabolism. On average, the hot-blooded vertebrate of the growth rate, at least 10 times faster than the cold-blooded animals. Grow faster, shorter life expectancy; grow more slowly, the longer life expectancy. What has the metabolism of the dinosaurs do? They are warm-blooded animals, or cold-blooded animals? This is a correct estimate of dinosaur life as a key. A lot of evidence shows that many dinosaur taxa are warm-blooded animals. If this is true, will use the current Health and growth patterns of vertebrate blood to calculate the life of dinosaurs. If the individual can live dinosaur blood for several decades to 100 years. In short, the dinosaurs have long passed away, we are still unable to accurately understand what they can Huoduo Jiu. Some paleontologists, in some dinosaur bones to study the growth rings found: These dinosaurs death at the age of 120 years old. Therefore, some people believe the life of dinosaurs may be longer, that may live to be 100-200 years old.