A hominid is a member of the biological family Hominidae, which includes modern humans, our ancestors, and other great apes like chimpanzees, gorillas, and orangutans. Hominids are characterized by their larger brains, upright walking, and complex social behaviors. The study of hominids helps scientists understand human evolution and the traits that distinguish us from other primates. Fossils and archaeological evidence provide insights into how early hominids lived, adapted, and interacted with their environment over millions of years.