11 Things You Might Not Know About Pigs

iStock.com/t-lorien
iStock.com/t-lorien

Perhaps there's a reason pigs are a favorite of children and fairy tales alike—pigs are some of the most intelligent and social animals out there. In honor of this year's designation as Year of the Pig on the Chinese zodiac calendar, here are a few facts you may not know about these curly-tailed cuties.

1. Pigs were domesticated more than 9000 years ago.

Scientists estimate that pigs have been around for quite a long time. The omnivorous species is one of the oldest domesticated kinds of animals—behind only dogs and goats. Their wild ancestor is thought to be the Eurasian boar.

2. Pigs have very few sweat glands.

A pig in a mud puddle
iStock.com/ChristiLaLiberte

Think of a classic image of a pig—odds are, it's rolling around in the mud. On hot days, pigs like to wallow in mud not because they're dirty, but to cool off. Pigs' lack sweat glands that would otherwise release body heat, and their high body fat necessitates they find ways to not fry in the sun. The muck allows them to maintain their proper body temperature while also having some leisurely, wallowing self-care.

3. Pigs can be found on every continent except Antarctica.

Considering how long swine has been around, the reach of the world's pig species spans across the globe. Every continent has some population of pigs, boars, and hogs, with Antarctica the only exception.

4. Feral pigs cause more than $1 billion in damages annually in the U.S.

Wild boars walk across a field
iStock.com/JohnCarnemolla

Your typical piglet doesn't evoke any sense of danger, but feral pigs—and a growing number of invasive pigs—are another story. Wild pigs cause an estimated $1.5 billion in damage annually in the United States; their rooting for food can tear up farmland, trample crops and recreational areas, and push out other wildlife. Plus, they can carry disease risks that are more threatening to livestock and other domesticated animals, like dogs [PDF]. Pigs may not be trampling over city buildings like Godzilla, but their impact on agricultural land is widespread and significant.

5. There are more pigs in Denmark than humans.

Denmark has a larger population of pigs than human beings. Part of this has to do with its lucrative meat industry, with over 5000 pig farms producing around 28 million pigs, with 20 million being slaughtered each year. In contrast, Denmark's human population is 5 to 6 million people. The pig population is so valuable, in fact, that the country recently began building a $12 million wall to prevent wild boars (who could possibly carry African swine fever, a viral disease which is highly contagious and deadly to both wild and domestic pigs, but not humans) in neighboring Germany from invading Danish pig farms.

6. Pigs are video game pros.

Research at Penn State in the 1990s demonstrated that pigs, which are often perceived as being dirty and feeble-minded, have a remarkable aptitude for video games. The study showed that pigs are so smart that they were able to learn how to play a game involving a joystick better than chimpanzees and a Jack Russell terrier (a breed often used in movies because it is known for its intelligence and trainability).

7. Forty-six piglets were used to play the role of Wilbur in Charlotte's Web.

Wilbur, the main character in E.B. White’s timeless children's tale Charlotte's Web, is likely literature's most beloved pig. The 2006 movie adaptation of the same name seemingly knew as such and used 46 piglets to accurately portray the character on the big screen. Each and every one of the piglets was treated like Hollywood royalty: After filming wrapped, they were looked after and given new homes in Australia (where the film was shot). And, another pig from the movie also got a happy ending—the sow who played Wilbur's mother, who was later named Alice, went to live at an animal sanctuary with two of the piglets. Squeal!

8. Winston Churchill appreciated pigs.

Winston Churchill in London in 1922.
Hulton Archive/Getty Images

Winston Churchill is best remembered for his leadership as the prime minister of the United Kingdom during World War II. It's somewhat of a shame that, lost in his sea of memorable speeches and quotes, his wise view on pigs went a bit unnoticed. "I am fond of pigs," Churchill once said. "Dogs look up to us. Cats look down on us. Pigs treat us as equals." In other words, dogs seek our approval, cats couldn't care less, but pigs, who are intelligent and sociable, are on more equal-footing with humans.

9. Some pigs know how to surf.

We told you pigs were smart. When they aren't playing barnyard bowling, basketball, or doing puzzles, sometimes they'll get their thrills from riding a wave. Hawaiian porcine celebrity Kamapua'a—otherwise known as Kama the Surfing Pig—goes boarding with his owner, Kai Holt, often enough that he has his surfing technique down. Kama's even good enough that he can take you out for a ride—via a GoPro, at least—and he's taught his piggie son, Kama 2, the ways of the Shaka life. Sounds like hog heaven.

10. Miss Piggy was originally named "Piggy Lee."

Miss Piggy attends a film premiere in 2011.
Frederick M. Brown/Getty Images

Kermit the Frog may have his own star on the Hollywood Walk of Fame, but his romantic interest, Miss Piggy, is an icon in her own right. But before the diva was fully realized, she went by a slightly different name. According to handwritten notes and Polaroids from Muppets creator Jim Henson, Miss Piggy was originally named Piggy Lee, a reference to famed jazz singer Peggy Lee.

"When I first created Miss Piggy I called her Miss Piggy Lee—as both a joke and an homage," Muppet designer Bonnie Erickson told Smithsonian in 2008. "Peggy Lee was a very independent woman, and Piggy certainly is the same." But, like many a starlet destined for the limelight, Piggy Lee needed her name to be more original. And also, "as Piggy's fame began to grow, nobody wanted to upset Peggy Lee," Erickson added, "especially because we admired her work."

11. The piggy bank originated from pygg pots.

A pink piggy bank
iStock.com/AnthiaCumming

As a kid, you saved all your spare change in one particular safekeeping storage item: the piggy bank. But of all the animals in the world, why did the pig get all of the glory?

In the 13th to 15th centuries, one of the most common places for people to store their money was in jars made of orange-colored clay called "pygg." As the English language evolved, that word eventually became pig or piggy. Whether by accident or design, around the 19th century manufacturers began molding little pots into the shape of pigs, and eventually piggy banks were all the rage. So next time you bring home a little extra bacon, you know where to put it.

Plano, Texas Is Home to a Dog-Friendly Movie Theater That Serves Bottomless Wine or Whiskey

K9 Cinemas
K9 Cinemas

For dog owners in Plano, Texas, movie night with Fido no longer just means cuddling on the couch and browsing Netflix. The recently opened K9 Cinemas invites moviegoers—both human and canine—to watch classic films on the big screen. And the best part for the human members of this couple? Your $15 ticket includes bottomless wine or whiskey (or soft drinks if you're under 21).

The theater operates as a pop-up (or perhaps pup-up?) in a private event space near Custer Road and 15th Street in Plano. Snacks—both the pet and people kind—are available for $2 apiece. Dogs are limited to two per person, and just 25 human seats are sold per showing to leave room for the furry guests.

Pet owners are asked follow a few rules in order to take advantage of what the theater has to offer. Dogs must be up-to-date on all their shots, and owners can submit veterinary records online or bring a hard copy to the theater to verify their pooch's health status. Once inside, owners are responsible for taking their dog out for potty breaks and cleaning up after any accidents that happen (thankfully the floors are concrete and easy to wipe down).

While many of the movies shown are canine-themed—a recent screening of A Dog's Journey included branded bandanas with every ticket purchase—they also hold special events, like a Game of Thrones finale watch party (no word on how the puppers in attendance responded to Jon Snow finally acknowledging what a good boy Ghost is).

13 Fascinating Facts About Bees

iStock.com/florintt
iStock.com/florintt

Sure, you know that bees pollinate our crops and give us honey. But there's so much more to these buzzing insects than that.

1. Bee stings have some benefits.

A toxin in bee venom called melittin may prevent HIV. Melittin can kill HIV by poking holes into the virus's protective envelope. (Meanwhile, when melittin hitches a ride on certain nanoparticles, it will just bounce off normal cells and leave them unharmed.) Scientists at Washington University in St. Louis hope the toxin can be used in preventative gels.

Bee stings may also ease pain caused by rheumatoid arthritis. Researchers at the University of Sao Paulo found that molecules in bee venom increase your body's level of glucocorticoid, an anti-inflammatory hormone.

2. Bees work harder than you do.

During chillier seasons, worker bees can live for nine months. But in the summer, they rarely last longer than six weeks—they literally work themselves to death.

3. When bees change jobs, they change their brain chemistry.

bees flying to a hive
iStock/bo1982

Bees are hardwired to do certain jobs. Scout bees, which search for new sources of food, are wired for adventure. Soldier bees, discovered in 2012, work as security guards their whole life. One percent of all middle-aged bees become undertakers—a genetic brain pattern compels them to remove dead bees from the hive. But most amazingly, regular honeybees—which perform multiple jobs in their lifetime—will change their brain chemistry before taking up a new gig.

4. Their brains defy time.

When aging bees do jobs usually reserved for younger members, their brain stops aging. In fact, their brain ages in reverse. (Imagine if riding a tricycle didn't just make you feel young—it actually made your brain tick like a younger person's.) Scientists at Arizona State University believe the discovery can help us slow the onset of dementia.

5. Bees are changing medicine.

To reinforce their hives, bees use a resin from poplar and evergreen trees called propolis. It's basically beehive glue. Although bees use it as caulk, humans use it to fight off bacteria, viruses, and fungi. Research shows that propolis taken from a beehive may relieve cold sores, canker sores, herpes, sore throat, cavities, and even eczema.

6. Bees can recognize human faces.

Honeybees make out faces the same way we do. They take parts—like eyebrows, lips, and ears—and cobble them together to make out the whole face. It’s called "configural processing," and it might help computer scientists improve face recognition technology, The New York Times reports.

7. Bees have personalities

Even in beehives, there are workers and shirkers. Researchers at the University of Illinois found that not all bees are interchangeable drones. Some bees are thrill-seekers. Others are a bit more timid. A 2011 study even found that agitated honeybees can be pessimistic, showing that, to some extent, bees might have feelings.

8. They get buzzed from caffeine and cocaine.

bumblebee on a flower
iStock/Whiteway

Nature didn't intend for caffeine to be relegated to your morning pot of coffee. It's actually a plant defense chemical that shoos harmful insects away and lures pollinators in. Scientists at Newcastle University found that nectar laced with caffeine helps bees remember where the flower is, increasing the chances of a return visit.

While caffeine makes bees work better, cocaine turns them into big fat liars. Bees "dance" to communicate—a way of giving fellow bees directions to good food. But high honeybees exaggerate their moves and overemphasize the food's quality. They even exhibit withdrawal symptoms, helping scientists understand the nuances of addiction.

9. Bees have Viking-like navigation techniques.

Bees use the Sun as a compass. But when it's cloudy, there's a backup—they navigate by polarized light, using special photoreceptors to find the Sun's place in the sky. The Vikings may have used a similar system: On sunny days, they navigated with sundials, but on cloudy days, sunstones—chunks of calcite that act like a Polaroid filter—helped them stay on course.

10. Bees can solve hairy mathematical problems.

Pretend it's the weekend, and it's time to do errands. You have to visit six stores and they're all at six separate locations. What's the shortest distance you can travel while visiting all six? Mathematicians call this the "traveling salesman problem," and it can even stump some computers. But for bumblebees, it's a snap. Researchers at Royal Holloway University in London found that bumblebees fly the shortest route possible between flowers. So far, they're the only animals known to solve the problem.

11. Bees are nature's most economical builders.

In 36 BCE, Marcus Terentius Varro argued that honeycombs were the most practical structures around. Centuries later, Greek mathematician Pappus solidified the "honeycomb conjecture" by making the same claim. Almost 2000 years later, American mathematician Thomas Hales wrote a mathematical proof showing that, of all the possible structures, honeycombs use the least amount of wax. And not only are honeycombs the most efficient structures in nature—the walls meet at a precise 120-degree angle, a perfect hexagon.

12. Bees can help us catch serial killers.

Serial killers behave like bees. They commit their crimes close to home, but far enough away that the neighbors don't get suspicious. Similarly, bees collect pollen near their hive, but far enough that predators can't find the hive. To understand how this "buffer zone" works, scientists studied bee behavior and wrote up a few algorithms. Their findings improved computer models police use to find felons.

13. Bees are job creators.

beekeeper working with bees
iStock/Milan_Jovic

The average American consumes roughly 1.51 pounds of honey each year. On top of that, the U.S. Department of Agriculture estimates that honeybees pollinate up to 80 percent of the country's insect crops—meaning bees pollinate over $15 billion worth of crops each year.

This article was updated and republished in 2019.

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