Read the selfish gene by dawkins. Nevertheless, animals have been observed in the wild to attempt sexual activity with other species or indeed inanimate objects. Female bonobo monkeys vagina female copulates with many males, and vice versa. In some penguin species, the females, even when in a committed relationship, will exchange sexual favours with strange males for the pebbles they need to build their nests. Apes and monkeys all have a bone in their penis whereas human males do not, Female bonobo monkeys vagina the human penis to be far more flexible than in other apes.