In most vertebrates, the absence of adaptive immunity would be catastrophic, but in some deep-sea angler fish species, it enables their “wild” and “wacky” mating habits.

Male lemurs secrete aldehydes from their wrist glands that may make them more attractive to females during the breeding season.

A protein present in the ejaculate of male fruit flies activates long-term memory formation in the brains of their female partners.

A study finds two species of guenon monkeys in Tanzania have been mating and producing fertile offspring for generations.

A unique courtship dance clued researchers in to the fact that they had a new species on their hands.

A group of around 300 whales produced 184 distinct songs over just a few years, according to a new study.

Scientists explore why male peacock spiders are so colorful. 

Female plant bugs produce a compound to counter males’ attempts to render the females unattractive to other mates.

“Nature’s melodies” may be a human construct that says more about us than about the musicality of other animals.