The Apatosaurus not only had a very long neck, but its thigh bones also measured up to 1.7 metres. This gave it the name "big-legged lizard". Due to its body size and energy requirements, The herbivore had to eat several hundred kilograms of food on a daily basis. It therefore used its teeth like a rake to gather leaves from the trees. Because it was not able to chew particularly well with its spoon-shaped teeth, It simply swallowed everything that came between its teeth, whole.