Human–animal breastfeeding has been practiced 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.
Mythology and stories
The suckling of animals by infants was a repeated theme in classical mythology. Most famously, twin brothers Romulus and Remus (the former founded Rome) were portrayed as having been raised by a she-wolf which suckled the infants, as depicted in the iconic image of the Capitoline Wolf. The Greek god Zeus was said to have been brought up by Amalthea, portrayed variously as a goat who suckled the god or as a nymph who brought him up on the milk of her goat. Similarly, Telephus, the son of the demigod Heracles, was suckled by a deer. Several famous ancient historical figures were claimed to have been suckled by animals; Cyrus I of Persia was said to have been suckled by a dog, while mares supposedly suckled Croesus, Xerxes and Lysimachus. In reality, though, such stories probably owed more to myth-making about such prominent figures, as they were used as evidence of their future greatness.
Stories of abandoned children being brought up by animal mothers such as she-wolves and bears were widespread in Europe from the Middle Ages and into modern times. One real-life case was that of Peter the Wild Boy, found in northern Germany in 1724. His coarse, curly hair was attributed to his being (supposedly) suckled by a bear, based on the premise that characteristics of the animal foster mother had been transmitted to him via her milk. (It is now thought he had Pitt-Hopkins syndrome, a condition unidentified until 1978.)
Perceived effect on character
The belief that animal characteristics could be transmitted via milk was widely held; the Swedish scientist Carl Linnaeus thought that being suckled by lionesses conferred great courage. Goats were thought to transmit a libidinous character and some preferred to employ donkeys as wet nurses instead, as they were thought to be more moral animals. In modern Egypt, though, donkeys were disfavoured as wet nurses as it was thought that a child suckled on donkeys' milk would acquire the animal's stupidity and obstinacy.
The teachings of the Quran discourage giving babies animal milk on the basis that animal traits might be transmitted along with it, though the Jewish Talmud permits children to suckle animals if the child's welfare dictates it. Human milk was thought to transmit character traits as well; in 19th century France a law was proposed to ban disreputable mothers from nursing their own children so that their immoral traits would not be transmitted via their milk.
Use of goats
Goats have often been used to suckle human babies and infants. The Khoikhoi of southern Africa were reported to tie their babies to the bellies of female goats so that they could feed there. In the 18th and 19th centuries, goats were widely used in Europe as alternatives to human wet nurses, as they were easier to obtain, cheaper to use and safer, as they were less prone to passing on diseases. This was already a well-established practice in rural areas of France and Italy; Pierre Brouzet, the personal physician of Louis XV of France, wrote of how he had seen "some peasants who have no other nurses but ewes, and these peasants were as strong and vigorous as others." In 1816, a German writer named Conrad A. Zweirlein overheard a conversation at a fashionable resort about the problems of wet nurses and responded by writing a book called The Goat as the Best and Most Agreeable Wet Nurse, which popularised the use of the animals for many years.
One important use of goats for suckling concerned the feeding and attempted cure of babies born with congenital syphilis inherited from their mothers. Liquid compounds laced with mercury were fed to nanny goats – if they refused to drink them, honey was recommended as a way of disguising the metallic taste – or were ingested into the goat's bloodstream via a deliberately inflicted wound on the animal's leg that was covered with an ointment containing mercury. The mercury would accumulate in the goats' milk and was passed into the syphilitic babies when they suckled at the goats' teats. This method did have some effect of improving the infants' mortality rates, though the goats tended to die prematurely of mercury poisoning.
In France, homes for foundlings often employed large numbers of goats, which were kept on the grounds, as they were considered less problematic than lower-class women when it came to feeding infants. In some institutions, nurses carried the infants to the goats; elsewhere, the goats came to the infants. Alphonse Le Roy described how goats were used at the foundling hospital in Aix-en-Provence in 1775: "The cribs are arranged in a large room in 2 ranks. Each goat which comes to feed enters bleating and goes to hunt the infant which has been given it, pushes back the covering with its horns and straddles the crib to give suck to the infant. Since that time they have raised very large numbers [of infants] in that hospital."
In 19th-century Ireland, foundlings from Dublin were "sent to the mountains of Wicklow, to feed upon the goats' milk. As the children grew older, the goats came to know them, and became very tame; so that the infant sought the goat, and was suckled by it as he would have been by a human wet nurse. These children throve remarkably well." Donkeys were preferred in England; as one writer has put it, "nothing was more picturesque than the spectacle of babies, held under the bellies of the donkeys in the stable adjoining the infants' ward, sucking contentedly the teats of the docile donkeys." In Brittany, attempts were made around 1900 to employ sows as wet nurses but foundered due to opposition to the use of pigs for this purpose.
Breastfeeding by humans of animals
The breastfeeding by humans of animals is a practice that is widely attested historically and continues to be practiced today by some cultures. The reasons for the practice are varied: to feed young animals, to drain a woman's breasts, to promote lactation, to develop good nipples, to prevent conception and so on. One example of the practice being used for health reasons comes from late 18th century England. When the writer Mary Wollstonecraft was dying of puerperal fever in 1797 following the birth of her second daughter, the doctor ordered that puppies be applied to her breasts to draw off the milk, possibly with the intention of helping her womb to contract to expel the infected placenta that was slowly poisoning her. Similarly, English and German physicians between the 16th and 18th centuries recommended using puppies to "draw" the mother's breasts, and in 1799 the German Friedrich Benjamin Osiander reported that in Göttingen women suckled young dogs to dislodge nodules from their breasts.
Religious and ceremonial reasons have also been a factor. Saint Veronica Giuliani (1660–1727), an Italian nun and mystic, was known for taking a lamb to bed with her and suckling it as a symbol of the Lamb of God. In far northern Japan, the Ainu people are noted for holding an annual bear festival at which a captured bear, raised and suckled by the women, is sacrificed. Bears were also suckled by the Itelmens of the Kamchatka Peninsula of Russia but in their case for economic reasons, to benefit from the meat when the bear was grown and to obtain highly prized bear bile for use in traditional medicine.
Elsewhere, animals have widely been used as "milk siblings" for infants to toughen the nipples and maintain the mother's milk supply. In Persia and Turkey puppies were used for this purpose. The same method was practiced in the United States in the early 19th century; William Potts Dewees recommended in 1825 that from the eighth month of pregnancy, expectant mothers should regularly use a puppy to harden the nipples, improve breast secretion and prevent inflammation of the breasts. The practice seems to have fallen out of favour by 1847, as Dewees suggested using a nurse or some other skilled person to carry out this task rather than an animal. Tribal peoples around the world have used many types of animals for the same purpose. Travelers in Guyana observed native women breastfeeding a variety of animals, including monkeys, opossums, pacas, agoutis, peccaries and deer. Native Canadians and Americans often breastfed young dogs; an observer commented that the Pima people of Arizona "withdrew their breasts sooner from their own infants than from young dogs."
In the present day, the act of breastfeeding animals has been used as a sometimes controversial artistic statement. The album art for Boys for Pele by Tori Amos includes a photograph of the singer breastfeeding a piglet. In Ireland, 22-year-old model and PETA member Agata Dembiecka became the focus of controversy in 2010 when a calendar issued by an animal rescue charity featured a photograph of her suckling a puppy.
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