We are animals after all.....

Interestingggg.....

Monogamy is one of several mating systems observed in animals. The amount of social monogamy in animals varies across taxa, with over 90 percent of birds engaging in social monogamy but only 7 percent of mammals engaging in social monogamy. The incidence of sexual monogamy appears quite rare in the animal kingdom. It is becoming clear that even animals that are socially monogamous engage in extra-pair copulations.[1]

In the animal world, some species of animals, including birds such as swans, once believed monogamous, are now known to engage in extra-pair copulations. Although social monogamy occurs in about 90 percent of avian species and about 3 percent of mammalian species, investigators estimate that 90 percent of socially monogamous species exhibit individual promiscuity in the form of extra-pair copulations.

Two examples of promiscuous animals are the primates chimpanzees and bonobos. These species live in social groups consisting of several males and several females. Each male copulates with many females, and vice versa. In bonobos, the amount of promiscuity is particularly striking because bonobos use sex to alleviate social conflict as well as to reproduce.

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