10 Surprising Facts About Animal Sex

iStock/Dias Studio
iStock/Dias Studio

Homo sapiens do not have a monopoly on strange sex. Peculiar mating rituals are prevalent throughout the animal kingdom. While writing my book Sex Weird-o-Pedia, these were the 10 most interesting animal sex facts I came across.

1. Turtle mating sounds make for good special effects.

It turns out that animal mating sounds can be really useful for capturing people’s attention. When the filmmakers of Jurassic Park wanted to create velociraptor sounds, they used recordings of tortoises getting it on.

2. Sharks have versatile birthing methods.

Rare close-up encounter with wild endangered species Zebra Leopard Shark (Stegostoma fasciatum
iStock/Placebo365

Australian scientists claim to have found a shark that gives virgin births. They studied a female zebra shark named Leonie, who laid eggs despite not being around a male shark in three years. Several years before her virgin birth, Leonie gave birth after mating with a male shark. She is believed to be the first known shark to reproduce both sexually and asexually.

3. Worms have really long dry spells.

You think it's been a long time since you've been intimate with someone? You've got nothing on worms. After sequencing the DNA of asexual translucent worms, NYU researchers discovered that one species, Diploscapter pachys, had not had sex for about 18 million years. This makes Diploscapter pachys one of the oldest known asexual species.

4. Fine fragrances turn big cats on.

Calvin Klein colognes have sex appeal to animals, too. Captive tigers and jaguars have become stimulated by the brand’s Obsession for Men scent. Forest rangers have used the scent to lure tigers out of the wild.

5. Barnacles have adaptable penises.

A close-up of barnacles on a rock
iStock/Photoshopped

Barnacles may have the most interesting penises in the animal kingdom. Their penises can stretch up to eight times the length of their body. And while many species' manhoods can change size, few can alter their shape. But researchers in Alberta found that barnacles that live in gentle waters have long and thin penises that are good for reach, while those in rough waters have short and wider penises that are better for holding off strong waves. The researchers then transported rough water barnacles to calmer waters and vice versa and found that after getting moved around, the barnacles adjusted their penis's shape to better fit their environment.

6. Water bugs mate loudly.

The water bug species Micronecta scholtzi are the loudest animal in the world relative to their size. The tiny critter reaches nearly 100 decibels when it rubs its penis against its abdomen. Basically, there is a rock concert going on whenever this bug releases a mating call.

7. Ducks defend themselves with their vaginas.

Duck penises can be terrifying: They are long and corkscrew-shaped and they can be used like a lasso to pull in females who are trying to escape unwanted advances. To fend off unwelcome mating attempts from overeager males, female ducks have evolved vaginas that twist in the opposite direction of their male counterparts’s corkscrew penises. Discover magazine referred to duck vaginas as “organic chastity belts."

8. Most birds don’t have penises.

Close-up of an ostrich
iStock/sasapanchenko

Just 3 percent of bird species have penises. Ostriches and ducks have them, but eagles and penguins do not. When birds get erections, their penises fill up with lymph fluid instead of blood. Birds without penises transfer sperm from male to female via what is known as a cloacal kiss.

9. Male birds are desperate to impress potential mates.

As long as humans have been on Earth, guys have done incredibly stupid things to try to impress women. Male birds are not immune to this dynamic.

Little birds like chickadees will group together to take on larger predators. It has generally been assumed that they do this for protection purposes, but researchers in Brazil came to a different conclusion: The researchers created a few fake owls, one from a species that regularly eats smaller birds and another from a less threatening owl species. They found that across 79 different species of small birds, the less threatening owl was attacked more often by the smaller birds. Their conclusion was that the small birds used the weaker opponent as an opportunity to showcase their defense skills to potential mates.

10. Unlike humans, animals have gotten frisky in space.

According to NASA, no humans have ever had sex in space. But other animal species have been more active with their sexuality and reproductivity outside our atmosphere.

The first pregnant mammals to fly in outer space aboard a U.S. spacecraft were rats, and frogs have conceived in orbit.

In an effort to better understand how reproduction works in the absence of gravity, Russia’s space agency launched five geckos into orbit in 2014 so that they could observe how the lizards had sex in space. Sadly, the geckos froze to death before they touched back down to Earth.

In 2018, NASA scientists began a mission that involved sending human and bull sperm to outer space. Their intention was to study how microgravity affects the motility of sperm cells. Because if humans are to ever colonize space, we must boldly bone where no one has boned before.

Ross Benes is the author of the new book Sex Weird-o-Pedia: The Ultimate Book of Shocking, Scandalous, and Incredibly Bizarre Sex Facts.

This Outdoor Lantern Will Keep Mosquitoes Away—No Bug Spray Necessary

Thermacell, Amazon
Thermacell, Amazon

With summer comes outdoor activities, and with those activities come mosquito bites. If you're one of the unlucky people who seem to attract the insects, you may be tempted to lock yourself inside for the rest of the season. But you don't have to choose between comfort and having a cocktail on the porch, because this lamp from Thermacell ($25) keeps outdoor spaces mosquito-free without the mess of bug spray.

The device looks like an ordinary lantern you would display on a patio, but it works like bug repellent. When it's turned on, a fuel cartridge in the center provides the heat needed to activate a repellent mat on top of the lamp. Once activated, the repellent in the mat creates a 15-by-15-foot bubble of protection that repels any mosquitos nearby, making it a great option for camping trips, days by the pool, and backyard barbecues.

Mosquito repellent lantern.

Unlike some other mosquito repellents, this lantern is clean, safe, and scent-free. It also provides light like a real lamp, so you can keep pests away without ruining your backyard's ambience.

The Thermacell mosquito repellent lantern is now available on Amazon. If you've already suffered your first mosquito bites of the summer, here's some insight into why that itch can be so excruciating.

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No Squawking, Please: A Backyard Bird Library Is the Star of This Livestream

Bird Library, YouTube
Bird Library, YouTube

Many people discovered backyard birding when they were quarantined in their homes at the start of the COVID-19 pandemic. Even if you have a vibrant wildlife population in your area, the Bird Library webcam is worth checking out. As Atlas Obscura reports, the bird feeder at the focus of the livestream resembles a tiny library where feathered guests can misbehave.

Librarian Rebecca Flowers and woodworker Kevin Cwalina were inspired to build the Bird Library in 2015. Located in a backyard in Charlottesville, Virginia, it features a miniature reading chair, bookshelves, and a reception desk. The decorations are even updated to match the seasons; the feeder currently sports a banner that says "Summer Reading." The main differences setting it apart from a real library are the bird seed scattered on the floor and the avian visitors.

The Bird Library attracts a diverse collection of patrons. Sparrows, cardinals, and mourning doves have been recorded perching on the librarian's desk and checking out the reading materials. The occasional squirrel has also been known to stop by.

Live video of the feeder streams on the Bird Library's YouTube page and website 24 hours a day, 7 days a week. You can play the video below to check in on the current guests. If the backyard Bird Library has inspired you to find birds closer to home, here's some gear for beginner naturalists.

[h/t Atlas Obscura]