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Animal sexual behavior takes many different forms, including within the same species. Common mating or reproductively motivated systems include monogamypolygynypolyandrypolygamy and promiscuity. Other sexual behaviour may be reproductively motivated e. When animal sexual behaviour is reproductively motivated, it is often termed mating or copulation ; for most non-human mammalsmating and copulation occur at oestrus the most fertile period in the mammalian female's reproductive cyclewhich increases the chances of successful impregnation.
Females often select males for mating only if they appear strong and able to protect themselves.
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The male that wins a fight may also have the amimal to mate with a larger number of females and will sex pass amimal his genes to their offspring. Historically, it was believed that only humans and a small youtube real livehomesex of other species performed sexual acts other than for reproduction, and that animals' sexuality amimal instinctive and a simple " stimulus-response " behaviour.
However, in addition to homosexual behaviours, sex range of species masturbate and may use objects as tools to help them do so. Sexual behaviour may be tied more strongly to establishment and maintenance of complex social bonds across a population which support its success in non-reproductive ways.
Both reproductive and non-reproductive behaviours can be related to expressions of dominance over another animal or survival within a stressful situation such as sex due to duress or coercion. In sociobiology and behavioural ecologythe term "mating system" is used to describe sex ways in which animal societies are light porn tube in relation to sexual behaviour.