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
Moral status of animals in the ancient world of animals. Moral status of animals in the ancient world The 21st-century debates about animal welfare and animal rights can be traced back to the ancient world. Jainism, dating from the 6th century BCE, is the oldest religious philosophy which has advocated complete non-violence towards animals of all forms. The concept of Ahiṃsā is so much intertwined with Jainism that it conjures up images of ascetics who cover their mouths and sweep the ground before them with small brushes to avoid injuring the most minuscule forms of life and Jain-owned animal sanctuaries where even the sickest, most deformed birds and