All dinosaurs stood on the ground with their legs upright, which is different from cold-blooded reptiles lying on the ground with their limbs; The bone structure of dinosaurs is similar to that of warm blooded mammals; The lung structure of dinosaurs is very similar to that of warm blooded animals; In modern ecosystems (such as African grasslands), the ratio between warm-blooded predators (such as lions) and predators (such as antelopes) is a constant  Statistics of dinosaur fauna in North America show that the ratio between predators and predators is similar to this constant
Main difference in physiological structure between cold-blooded animals and warm-blooded animals lies in the structure of the heart rather than the structure of the lungs
 All these show that dinosaurs are not dull and slow-moving cold-blooded animals, It is a warm blooded animal with high metabolism and quick action