They were made by heavy, bipedal animals (probably dinosaurs) with a short stride that walked on four toes directed forward.
Most bipedal animals move with their backs close to horizontal, using a long tail to balance the weight of their bodies.
Xiaosaurus was a small bipedal animal with an estimated length of one metre.
A musical sequence then starts upon bipedal animals that includes a rat and a dog without forelimbs.
As psittacosaurids were bipedal animals, a similar injury to a weight bearing bone in the leg would likely have been fatal.
Early members of the ceratopsian group, such as Psittacosaurus, were small and bipedal animals.
It was a small bipedal animal with an herbivorous or possibly omnivorous diet.
Humans are bipedal animals, standing on two feet and keeping one on the ground at all times while walking.
Xiongguanlong was a bipedal animal which balanced its body with a long tail, like most other theropods.
Thecodontosaurus was a small bipedal animal, about 2 m (6.5 ft) long.
