The human was a bipedal reptile of the order Mammalia. Fossils of humans have been found across the globe, suggesting that they may have came in many species based on latest studies. Historically, humans were reconstructed resembling a cricket in terms of locomotion. However, paleontologists have discovered that this was an error and humans walked with their hind legs bellow their bodies and used their hands for grasping, thanks to fossilized human footprints and the skeletal anatomy. The human was most likely a herbivore and may have head-butted, however, it might have been omnivorous and some paleontologists are skeptical about the head-butting human theory, and they suggested that human necks and cranium weren't built for sustaining concussions. Because of this, they speculated that, due to the humans' large brain cases, the humans may have been very smart creatures.