Nest-building in primates Nest-building in primates Nest-building in primates refers to the behaviour of building nests by extant strepsirrhines (lemurs and lorisoids) and hominid apes (gorillas, chimpanzees, orangutans, and humans). Strepsirrhines build nests for both sleeping and also for raising families. Hominid apes build nests for sleeping at night, and in some species, for sleeping during the day. Nest-building by hominid apes is learned by infants watching the mother and others in the group, and is considered tool use rather than animal architecture. Old World monkeys and New World monkeys do not nest. It has been speculated that a major evolutionary advance in
The Animal World (film) even though, as Harryhausen pointed out, the film's live action sequences show fights between lions and gazelles and the like. For many years, still shots from the segment were included in View-Master slide show reels. Some of the footage was reused for portions of the "Night Gallery" season 2 episode "The Painted Mirror," as well as in the 1970 film "Trog", and the entire sequence was released as an extra on the 2003 DVD release of "The Black Scorpion". The Animal World (film) The Animal World is a 1956 documentary film that was produced, written and directed by Irwin Allen.