1, behavior:
Dinosaurs' limbs were located under the abdomen, perpendicular to the abdomen, and they walked on four feet or two feet, even running at a speed of 70 to 80 kilometers per hour. However, reptiles such as crocodiles with limbs on both sides of their bodies can only crawl forward (except a few lizards), with a maximum speed of 10 km.
2. Hair:
There are many dinosaurs, especially theropods. Most of them have hair, even fluff or feathers, which can slide.
3. In terms of reproduction:
Crocodiles don't hatch eggs, but some theropods, such as the egg stealing dragon, have the habit of hatching eggs.
4. Body temperature:
Egg-stealing dinosaurs, even some hairy dinosaurs, are warm-blooded animals, while crocodiles and lizards are warm-blooded animals.
5. Predation:
Most theropod dinosaurs can catch or tear prey with their forelimbs, while crocodile forelimbs are only used for crawling and cannot be used for predation.