Researchers working in Burma have uncovered the fossilized remains of a 99-million-year old male daddy longlegs with its penis fully extended and erect. It’s possibly the oldest—and longest held—erection in the history of science.
Just in time for Halloween, University of Glasgow medical student Mike McCormick released diagrams of the female and male reproductive systems made out of all the kinds of candy I hated to get when I went trick-or-treating as a kid.
Cat sex videos are all the same. The tom mounts the female, she arches her back and moves her tail aside–a response called lordosis, by the way–and the two of them get down to the act. But soon afterwards, the yowling starts, followed by the spitting and swiping. Why so angry, kittycat?
The tuatara isn’t actually a lizard. It’s the last survivor of a 250 million year old group of reptiles that mostly went extinct with the dinosaurs. It doesn’t have a penis, and ironically, that’s made it a linchpin for understanding how penises evolved in vertebrates.
Ejaculation may feel like a glorious mess, as uncontrollable as an avalanche or a runaway train. In reality, it’s a tightly choreographed court dance: integrating three different branches of the nervous system, triggering cascades of contractions in smooth and striated muscles, all accompanied by the electrical storm…
Lamar Odom came off life support and regained consciousness today after collapsing while visiting a brothel in Nevada. The apparent culprit(s), according to the Nye County sheriff: cocaine combined with 10 tabs of natural “sexual performance enhancer supplements” — a.k.a. “herbal Viagra.” But it’s possible those…
Developmental biologists noticed back in the 1990s that a lot of the genes that make a penis are the same as the ones that make limbs. They’ve been finding new similarities ever since. Ed Yong, writing at his occasionally penis-obsessed blog Not Exactly Rocket Science, explains how legless, but not penis-less snakes…
Some mammals have a dangerous-looking penis because their glans is covered in spines. In a few cases, we know why they’re there (typically, to induce ovulation during copulation). But in many other species, the purpose of the spiky bits is something of a mystery.
Previous studies of how women perceive penis size and shape relied on 2D drawings and photographs of flaccid penises. Now, a research team of psychologists from UCLA and the University of New Mexico have taken things into the third dimension.
Female mosquitofish give birth to tiny babies, like the guppies you may remember from your third-grade aquarium. That means male mosquitofish don’t spawn: if they’re going to be dads, they need to use a modified fin (called a gonopodium) to inseminate their mate. And sex with a long, stiff fin demands a daunting level…
Guys, imagine for a moment what life would be like if you couldn’t feel your penis. That can happen to men with some kinds of spinal injuries, or who were born with a condition called spina bifida. Their penises can still sense touch, but a break in the spinal cord means the signal never makes it to the brain.
If you’ve ever watched a pair of dogs have sex, you’ve probably noticed something odd happen partway through the act. At first, the male grips the female’s back and humps away–nothing unusual about it. But then he dismounts and turns to face away from his mate, with his penis still stuck inside her.
We’ve seen it in study after study: men worry about what their penis looks like. Is it too short? Too long? Too thin? Is the glans too fat? Will that birthmark be a deal breaker? Relax. A study published in the Journal of Sexual Medicine last month suggests that women don’t really notice those details.
Sea slugs are beautiful, jewel-like animals with surprisingly violent mating habits. This tiny unnamed species in the genus Siphopteron is no different.
Erectile dysfunction isn’t a new problem, but there weren’t any effective treatments for the condition until the middle of the 20th century. Before then, desperate people turned to sympathetic magic, patent medicines, fad treatments, and convincing frauds to try to get it up.
You already know that a penis has arteries to bring blood to its erectile tissues, and veins that take the blood away again when it returns to its normal flaccid state. You may not know that there’s another set of vessels tucked under its skin. We just got our first good look at them.
Until the early 1970s, if problems with penile blood flow or nerve function meant a guy couldn’t get it up, his choices for treatment were pretty limited, and certainly did not mimic nature.
Her Majesty Queen Elizabeth II is showing the world sketches of penises and vulvas. Admittedly, they’re penises and vulvas that Leonardo da Vinci drew around 1508, which makes them art instead of crotch shots. Check ‘em out at the oh-so-proper Royal Collection Trust website.
Like our brains, the human penis hasn’t evolved in tens of thousands of years — and that’s a real shame. Our favorite male body part is capable of so much more. In consideration of pending advances in science and technology, here’s what to expect with penis 2.0.