Long-lived species decrease their reproduction more than short-lived species in response to lower-than-normal precipitation, and thereby gain a survival advantage, a study finds.

Researchers use advanced imaging techniques to see what happens when a male and a female mate.

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. 

Researchers document the loudest sound ever recorded in fish.

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

A survey of sounds from birds to whales to fruit flies to fish

Idiot Brain, Wild Sex, Why Diets Make Us Fat, and The Ethics of Invention

Biologist Carin Bondar delivers a TED talk about the wilder side of sex.

Two sequencing studies reveal the genetics underlying the sexual behavior of the European and Asian birds.

Scientists mutate a mating pheromone and its corresponding receptor in yeast to promote speciation.

Scientists report for the first time that a snail’s seminal fluid proteins can suppress the mating success of the male side of its hermaphroditic partner.

Species in a tightly knit genus of Old World primates have evolved tell-tale facial characteristics to prevent hybridization, a study shows.

Insects in Brazil go beyond simple behavioral sex-role reversal. In these animals, the females use an erectile organ to penetrate the male’s genital chamber.

A round-up of recent discoveries in behavior research