Dinosaurs were the most Biggest animals that ever lived. They were reptiles with scaly skins plant eating dinosaurs were huge and diplodocus were some of the largest dinosaurs is up to 30 meters in length

  ![image](https://img.esteem.ws/bthwq3nsv7.jpg) 

While eating dinosaurs were smaller and ran on hind legs. The largest smaller dinosaurs was tyrannosaurus which stood about 5 meters tall. But dinosaurs disappeared for about 65 million year ago no one exactly no why till today.

  ![image](https://img.esteem.ws/ttxo6gczxb.jpg)

But they may have died out of the mammal population grew bigger and took most of the dinosaurs food.