Tag archives for sex
You could call it everlasting love: Scientists have discovered the oldest fossil of mating insects, which lived during the Jurassic period, a new study says.
Move over, Chanel No. 5: Scientists have discovered why the scent of bile is irresistible to female sea lampreys.
Hyenas, garter snakes, and cuttlefish are just a few species that act like—or sometimes become—the opposite sex.
Penis bones offer the first hard evidence of how an extinct species of bear lived and mated, a new study says.
A new study says mammals can “choose” the sex of their offspring—does that include us?
Some female animals—including fish, snakes, and octopi—store sperm in their reproductive tracts for years after mating. But why?
If you thought the battle of the sexes was chaotic, meet Tetrahymena thermophila, whose genetic mysteries are finally being revealed.
Female Ulidiid flies expel and eat ejaculate as a way to control who will father their offspring, a new study says.
Worms that eat dead whales at the bottom of the ocean also mate inside the bones, a new study shows for the first time.
Spring may be when a young man’s fancy turns to love, but new evidence suggests that it’s winter when his sperm is at its spunkiest.
Valentine’s Day inspires silly displays in the name of romance, but heart-shaped candies and sappy cards are nothing compared to the show that nature routinely puts on. From balloon-blowing seals to penis-fencing flatworms, here’s a selection of some of the flashiest—and weirdest—ways that animals show off and compete to win mates.
A species of sea slug cuts its own penis off after mating and regrows a new reproductive organ within 24 hours, a new study says.
Barnacles, already famous for having longest penises in the animal kingdom (relative to size), have another reproductive quirk.
It’s a battle of the surveys, as one finds that Facebook and email are more irresistible than sex, while another asserts that sex offers far more happiness and pleasure than online pursuits.
An international team of researchers has found that female Komodo dragons are living half as long as males do. The reason? “Housework.” That’s right. Housework: The physically demanding tasks of building large nests, maintaining them, and guarding their eggs are shortening the lives of female Komodo dragons. Members of the research team come from Australia,…
A new species of freshwater fish found in Mexico has several interesting – and perhaps cringe-inducing – characteristics, including four hooks on the male genitalia, North Carolina State University said this week.
The hen with the largest comb gets a bigger dose of sperm, and thus more chicks, according to research published this week. Roosters have figured out what poultry breeders know — combs are a reliable indicator of a hen’s ability to produce more eggs.
When house flies get busy, they run the risk of becoming a bat’s dinner.
It is without doubt one of the strangest things I have ever seen in my life, says zoologist Lucy Cooke. She’s describing her first sighting of the bizarre four-headed penis of the echidna, a spiny, termite-eating, egg-laying mammal found in Australia.
A South African court effectively threw away the key when it jailed two smugglers convicted of trying to smuggle rhino horns out of the country. But the slaughter of the country’s pachyderms for the spurious healing power of their horns continues unchecked. A new scheme allegedly involves sex workers posing as trophy hunters seeking to harvest rhino horns through a legal loophole.
As any biologist will tell you, sex doesn’t seem to make sense. It requires males, which waste resources but don’t directly produce offspring. Why bother with males at all when asexual reproduction is so much more efficient?
The mating habits of crayfish are something of a pissing contest. Fiona Berry and Thomas Breithaupt from the University of Hull, UK, investigated the effects of urine-based chemical signaling on sexually active crayfish. “Walking through urine drives crayfish into an aggressive sexual frenzy,” according to the researchers, writing in the open access journal BMC Biology. Crayfish fight…
Female orangutans are forced to copulate against their will more frequently than has been observed in any other mammal. Scientists have generally believed that this is because females spurn mating with inferior “unflanged” males. Rejected males have no chance to mate unless they use coercion–or so it was thought. But new studies, using the first…