Is Gender Unique to Humans?

Evidence from our closest evolutionary relatives suggests that we might not be the only animals with a sense of gender identity

SAPIENS
SAPIENS
Dec 5, 2018 · 13 min read
Photo: Anup Shah/Photodisc/Getty Images

By Jay Schwartz

This summer, in the introductory course I teach on the evolution and biology of human and animal behavior, I showed my students a website that demonstrates how to…

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