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Humpback whales photographed having sex — and gay sex — for the first time

First Ever Footage of Humpback Whales Having Sex Raises Some Awkward Questions

AI can tell a person's sex from brain scans with 90 per cent accuracy

Self-Love Is Important, but We Mammals Are Stuck With Sex

Female scorpions get stung during sex – and they seem to welcome it

When Will We Finally Have Sex In Space?

The Sex-Obsessed Marsupials That Will Sleep When They’re Dead

Tiny marsupials sacrifice sleep for sex during the breeding season

This Tiny Marsupial Gives Up Sleep for Sex, Then Drops Dead

With just weeks to live, these marsupials prioritize sex over sleep

These Tiny Creatures Become Cannibals After Sex Turns Deadly

Some corals change sex each year so they can find mates

Plastic Waste Is Turning Tiny Marine Animals Off Sex

This Bat Uses Its Oversized Penis as an 'Arm' during Sex

Bat uses its huge penis like an arm during sex

To Understand Sex, We Need to Ask the Right Questions

Do animals know that sex leads to babies?

Sex Appears to Protect Brain Health in Older Adults, Scientists Say

These female frogs fake their own deaths to get out of sex

Mammals may use same-sex sexual behavior for conflict resolution, bonding, and more. It's been observed in at least 51 species of non-human primates.