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Capuchin monkey. A study at Yale–New Haven Hospital trained capuchin monkeys to use silver discs as money in order to study their economic behavior. The discs could be exchanged by the monkeys for various treats. During one isolated incident, a researcher observed what appeared to be a monkey exchanging a disc for sex. The monkey that was ...
However, it has been observed in some species, such as squirrel monkeys, patas monkeys, vervets, and captive chimpanzees, that females can “gang up” on males when they are being aggressive. They will even try to protect a female in distress. Females have even been observed to kill immigrant males in wild red colobus monkeys. [1]
Indirect benefits of mating for females can be gained through sperm competition to attain "good genes", cryptic female choice, increased genetic quality, and genetic diversity. [7] Females spiders ( Pisaura mirabilis ) store more sperm from gift-giving males suggesting that sperm storage is under female control through cryptic sperm choice. [ 8 ]
The possibility of hybrids between humans and other apes has been entertained since at least the medieval period; Saint Peter Damian (11th century) claimed to have been told of the offspring of a human woman who had mated with a non-human ape, [3] and so did Antonio Zucchelli, an Italian Franciscan capuchin friar who was a missionary in Africa from 1698 to 1702, [4] and Sir Edward Coke in "The ...
The form of exploitation in non-human primates most attributable to adult females is when non-lactating females take an infant from its mother (allomothering) and forcibly retain it until starvation. This behavior is known as the "aunting to death" phenomenon; these non-lactating female primates gain mothering-like experience, yet lack the ...
Because females do not need extra help raising their nests, males can afford to invest in multiple females. Nonetheless, male parental care is often found in many polygynous territorial bird species, [9] leading to female competition for male assistance. Most often, males will seek a second female to impregnate, once the first female has laid ...
The largest female in the harem can switch sex over a few days and replace the dominant male. [72] This is found amongst coral reef fishes such as groupers , parrotfishes and wrasses . As an example, most wrasses are protogynous hermaphrodites within a haremic mating system.
Animal non-reproductive sexual behavior encompasses sexual activities that non-human animals participate in which do not lead to the reproduction of the species. Although procreation continues to be the primary explanation for sexual behavior in animals, recent observations on animal behavior have given alternative reasons for the engagement in sexual activities by animals. [1]