An animal is a living, sentient, multicellular organism that requires oxygen and organic foods, is capable of voluntary movement, and has membranous cell walls and an extracellular matrix composed of collagen, proteoglycans, adhesive glycoproteins, and integrin. The members of this division include amphibians, reptiles, birds, mammals, and several types of fish. Hominidae See Primate Facts and other links below. H ominids range in weight from 48 kg to 270 kg. Males are usually larger than females.
Hominids are the largest primates , with robust bodies and well-developed forearms.
Numerous skeletal differences between hominids and other primates are related to their upright or semi-upright stance . All members of this family have large braincase . Hominids have broad incisors and their canines are never developed into tusks. Members of this family are well-known for the complexity of their social behavior . Facial expression and complex vocalizations play an important role in the behavior of hominids.