Same-sex sexual behaviour in primates is a survival strategy
Same-sex sexual behaviour has been recorded in around 1,500 species, from insects and starfish to birds and mammals. Yet sex between two male baboons will not produce an infant. Nor will the kissing and frottage female snow macaques so regularly and obviously enjoy (pictured). And why do male bats have erect penises when they nibble each other’s wings? Evolutionary biologists call this Darwin’s Paradox.
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