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. »
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… »
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… »
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. »
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.
It’s normal for a penis to curve a little when it’s erect, but Peyronie’s disease pushes that curve to alarming extremes. It doesn’t usually muck with a guy’s ability to get it up, but once the penis is erect, it can deviate 30° or more from its normal line of action. The curvature can be so severe it interferes with… »
Your spam folder is probably full of the offers. (Mine certainly is.) But none of the emails promising to let you “please your partner” by making you a “giant for girls” with “strong erections” say a thing about how the penis gets erect in the first place. Here’s how it really works. »
You may have noticed some news around these weird sounding devices that measure “arousal”. They don’t. But they do measure changes in penile shape, and as such, can give users a rough estimate – in a non-invasive way – of how much blood is flowing into the penis during erection. »