Diplodocus.

Diplodocus was the longest herbivore wich lived million years ago. It was one of the biggest herbivore on earth.

The diplodocus was an amazing animal. It had a long neck to reach the treetop to get leaves. It also had a long tail to whack other dinosaurs. There legs have a sharp claw at the back of their toes. They had thin teeth to chew the leaves off. 

I think diplodocus are cool because they can reach high things.