From female macaques in captivity who craved sexual variety so much that they grew listless and depressed if keepers didn’t cycle in new males every three years; to ostensibly “monogamous” female gibbons who copulated with other males when their partners were out of sight; to female chimps who risked their lives attempting to join new troops in order to copulate with novel males—there was good reason, primatologists including Meredith Small, Alison Jolly, Barbara Smuts, and Jeanne Altmann argued, to reexamine with a critical eye the presumed “universal” sex differences in sexual and
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