In her book "Bonk: The Curious Coupling of Science and Sex," Mary Roach explores the fascinating relationship between hormones and behavior, particularly in the context of monkeys. She notes that female monkeys act on their instincts without the social pressures that often influence human decisions about relationships and reproduction. Their behavior serves as a clear example of how hormones drive actions without the complexities of societal expectations.

This argument highlights how, unlike humans, these primates exhibit raw and unfiltered expressions of their biological impulses. By observing monkeys, Roach illustrates how hormones can dictate behavior in a straightforward manner, free from concerns about potential pregnancy or the judgments of peers. This innate response underscores the influence of biological factors on social behavior and sexual interactions.