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Human–animal breastfeeding
Human–animal breastfeeding has been practised in many different cultures in many time periods. The practice of breastfeeding or suckling between humans and other species has gone in both directions: human females sometimes breastfeed young animals, and animals are used to suckle babies and children. Animals were used as substitute wet nurses for infants, particularly after the rise of syphilis increased the health risks of wet nursing. Goats and donkeys were widely used to feed abandoned babies in foundling hospitals in 18th- and 19th-century Europe. Breastfeeding animals has also been practised, whether for health reasons – such as to toughen the nipples and improve the flow of milk – or for religious and cultural purposes. A wide variety of animals have been used for this purpose, including puppies, kittens, piglets and monkeys.
==Suckling of animals by humans==
Terracotta feeding bottles surviving from the third millennium BC in Sumeria indicate that children who were not being breastfed were receiving animal milk, probably from cows. It is possible that some infants directly suckled lactating animals, which served as alternatives to wet nurses. Unless another lactating woman was available, a mother who lacked enough breast milk was likely to lose her child. To avert that possibility if a wet nurse was not available, an animal such as a donkey, cow, goat, sheep or dog could be employed. Suckling directly was preferable to milking an animal and giving the milk, as contamination by microbes during the milking process could lead to the infant contracting a deadly diarrheal disease. It was not until as late as the 1870s that stored animal milk became safe to drink due to the invention of pasteurisation and sterilisation.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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