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Homosexual parenting in animals : ウィキペディア英語版
Non-reproductive sexual behavior in animals
Non-reproductive sexual behavior is sexual activities animals participate in that do not lead to the reproduction of the species. Though procreation continues to be the primary explanation for sexual behavior in animals, recent observations on animal behavior has given alternative reasons for the engagement in sexual activities by animals. The general explanation for sexual activity in the animal kingdom is now being disputed with recent observations, such as a mature male fruit fly courting immature male fruit fly.
Animals have been observed to engage in sex for social interaction, demonstration of dominance, aggression relief, exchange for significant materials, and sexual stimulation. Observed non-procreative sexual activities include non-copulatory mounting (without penetration, or by the female), oral sex, genital stimulation, anal stimulation, interspecies mating, and acts of affection. There have also been observations of animals engaging in homosexual behaviors, as well as sex with dead animals and sex involving juveniles.〔
==Social interaction and bonding==

Lions are known to engage in sex to create bonds and interact with each other. Lions live in a social group known as a pride that consists of 2-18 females and 1-7 males. The females found in these prides were born into the pride. The males enter the pride from other prides. The success of reproduction for each individual lion is dependent on the number of male lions found in their social group. Male lions create coalitions and search for prides to take over. Successful coalitions usually have created a strong bond with each other and will take over prides. Once winning in a competition, all current males in the pride will be kicked out and left to find another pride. While in search for another pride these males will often engage in sexual behavior with each other; creating a strong bond in this new coalition created.
Sex is a basic form of communication in bonobos’ life. It seems to infuse everything from simple expressions of affection to the establishment of dominance. Female bonobos have been observed to engage in sexual activities to create bonds with dominate bonobos. Having created this bond with the male, they will share food with each other and not compete with each other.〔 All members of the group are potential sex partners, males participate in sexual activity with other males, as do females with other females. These bonds made between females are for protection against male bonobos. If a male bonobo attempts to harass a female bonobo, the other females will help the female defend herself because of the strong bonds they have with each other.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Non-reproductive sexual behavior in animals」の詳細全文を読む



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