Reciprocal food sharing

Reciprocal food sharing is a form of reciprocal altruism in which an individual animal gives up the food it has foraged to another individual. Food sharing has been observed in a wide range of animals, including insects, birds, cetaceans, vampire bats, and primates. It is not always an active behavior; tolerance of theft may also be considered a form of food sharing (Stevens and Gilby). Not only does food sharing occur among members of the same family, but also among non-kin individuals as well, creating an interesting evolutionary question.