What was the first sexual intercourse like? A new study finds it involved fish and looked a lot like a square dance.
Male goats emit a sexually-stimulating scent that goes right to a female's brain for an immediate turn-on. Continue reading →
Try as they might, these animals likely would win no awards for mating success this Valentine's Day.
Is an animal more likely to fight or make love? A new study identifies the fighters, the lovers and those who are in between.
Cats may bite, and geese may have barbed penises, but one newly described hermaphroditic sea slug has taken violent animal sex to a new level.
A fossil nicknamed 'Forever Love' shows a copulating couple frozen in time since the Middle Jurassic. Continue reading →
Sex comes with risks, but a self-fertilizing animal on its way to extinction sheds light on why so many organisms reproduce by mating.
Variety is the spice of life and animals know it pays to be flexible.
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