Crocodile attacks on humans are common in places where large crocodilians are native and human populations live. Only 6 of the 23 crocodilian species are considered dangerous to adult humans, and only individuals 2 metres (6.6 ft) in length or more represent a serious danger to humans, as smaller crocodiles are considered incapable of killing a human. However, even the smallest species can inflict painful bites requiring stitches. In addition, a small child may be of a similar size to the prey of some of the crocodilian species incapable of preying on adult humans...More Info:Crocodile attack
The study of human evolution involves many scientific disciplines, including physical anthropology, primatology, archaeology, paleontology, ethology, linguistics, evolutionary psychology, embryology and genetics...Full Story