36 Unusual Units of Measurement

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gpointstudio/iStock via Getty Images

When it comes to measurement, we have a lot of words that mean a bunch of stuff or a bit of something, but many of those terms have actual, specific meanings.

Let's learn about a whole barrel full of them.

1. A barrel changes depending on what's in it.

Many barrels stacked on a dock with the water in the background
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When you're talking about oil, a barrel is exactly 42 gallons. For beer, a barrel is 31.5 gallons. For dry goods, it's 105 dry quarts. That last one was defined by Congress in 1915.

2. A dash is part of a teaspoon.

Multicolored measuring spoons
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Then there's the dash, as in, "just a dash of salt," which is between 1/16 and 1/8 of a teaspoon.

3. A pinch is part of a dash.

Chef putting pinch of salt on food
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A pinch is half a dash, or 1/16 of a teaspoon.

4. A Smidgen is a real thing.

Black peppercorns in a measuring spoon
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It's a half of a pinch, or 1/32 of a teaspoon.

5. Pats of butter are 1/3 of an ounce.

Pat of butter on corn
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Butter is packaged at 48 pats per pound, which means that each pat is 1/3 of an ounce or 1 tablespoon.

6. A drop is 1/480 of a fluid ounce.

A dropper releases a drop into a brown vial
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Okay, to be more specific, it's .05 milliliters, which you probably already knew if you're a pharmacist.

7. Australians used to measure rain by points.

Flooded street with splashing cars
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We don't measure rain by drops, but in Australia, they used to measure rain by points. A point was .254 milliliters, so you might say, "We got a hundred points of rain last night!," which sounds like a lot, but isn't.

8. The Jiffy is about 10 milliseconds.

Computer circuit board
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The jiffy is a unit of time used in computer engineering that has to do with a computer's clock cycle. It's about 10 milliseconds. It means something even faster in physics, where a jiffy is a unit of measurement for the time it takes for light to travel a distance the size of a nucleus.

9. A Shake is 10 nanoseconds.

Nuclear power plant
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Physicists also have the shake, which is used to measure nuclear reactions. A shake takes 10 nanoseconds, or 10 billionths of a second, so the next time you go somewhere for the weekend, you can tell friends you'll be gone for 17,280,000,000,000 shakes.

10. A hogshead was 63 gallons.

Black and white engraving of three men opening a hogshead barrel
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Specifically, 63 gallons of wine. It's a term dating back to at least the 15th century, and it might be a corruption of the term hog's hide, which might make clearer sense for referring to a wine container, but we really don't know how the word came about. The casks are also repurposed to mature whiskey.

11. You can have a double hogshead ...

Port pipe barrels
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It's called a port pipe, and it holds about 145 gallons.

12. ... or a butt.

Man pouring wine out of a barrel
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A butt holds about 132 gallons, so when someone tells you that they drank a buttload last night, they are either lying or dead.

13. Megadeath is a unit of atomic bomb destruction.

Atomic explosion
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Megade(a)th is not just the third-greatest heavy metal band of all time. It's also a terrifying unit of measurement. It was coined in the '50s as a unit of atom bomb destruction. One megadeath is equal to one million deaths.

14. A micromort measures the probability of death.

Woman holding a cigarette
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On the other end of things, we've got the micromort, a unit for measuring the statistical probability of death. One micromort is a one-in-a-million chance of death. So, smoking 1.4 cigarettes, or spending an hour in a coal mine increases your risk of death by precisely one micromort. Going skydiving? Seven micromorts. They're the coolest thing—and also the only cool thing—ever invented by actuaries.

15. manpower is about 1/10th as powerful as horsepower.

Close up of three horse heads looking to the left
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So you've heard of horsepower, but did you know there's also a measurable unit of manpower? It was worked out to somewhere between 1/8 and a 1/10 of a unit of horsepower. Horsepower was based on the fact that the average brewery horse could move something weighing 330 pounds 100 feet in one minute, stop, and repeat for eight hours. And it would take about eight to 10 men to do the same, so your Camaro might have a 300 horsepower engine, but my Chevy Volt has like a 2000 manpower engine.

16. A Darwin is, naturally, a unit of measuring evolution.

Statue of Charles Darwin
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We also measure things using the names of famous people. A Darwin, for instance, is a special ratio for measuring the rate of evolution. Evolution happening at the rate of one Darwin would change something by a factor of about 2.7 over a million years.

17. A Gal measures gravitational acceleration.

Milky Way over a mountain
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A Galileo or Gal is a unit of measurement used by physicists to talk about gravitational acceleration, but because there's only about a seven Galileo difference between the lowest and highest possible measurements on Earth, calculations are usually done in milli-Galileos.

18. Movements of your computer mouse are measured in Mickeys.

Woman holding computer mouse
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There's another guy you might have heard of who gave his name to a unit of measurement having to do with your computer mouse. The smallest detectable movement of a computer mouse—somewhere around 1/10 of a millimeter—is called a Mickey.

19. A Half-million twitter followers is a wheaton.

Woman smiling at smartphone
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After half a million people followed Wil Wheaton on Twitter, John Kovalic dubbed that number a Wheaton. The beloved actor and brewmaster got to about six Wheatons on the social site before deactivating his account in 2018.

20. The Length of a Beard-SEcond is in dispute.

A redheaded man with a big beard gestures a size with his fingers
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Speaking of great men with facial hair, a beard-second is the average length a man's beard grows in one second, but beard growth experts disagree on what that length actually is. Some say it's 10 nanometers. Some say it's five. Some say, "I can't believe that we're spending our time talking about this."

21. A millihelen is 1/1000th of one helen of troy.

Ships on a blue sea
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Helen of Troy's magnificent mug is said to have launched a thousand ships, but what if there's just one ship that needs help getting out of port? Then, you need a millihelen, the amount of beauty required to launch a single ship.

22. A barleycorn is 1/3 of an inch.

Barley on a wooden table
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A few hundred years ago in England, small objects were measured in barleycorns, as in grains of barley. A barleycorn was a third of an inch, which means it's barley there at all.

23. A poppyseed is even smaller.

Poppyseed rolls
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If you needed something smaller than that, you could measure by poppyseeds, defined as either 1/4 or 1/5 of a barleycorn. In fact, grain is the basis of our whole system of terms for measuring weight.

24. A pound was 5400 or 6750 grains.

Pound weight
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The Roman forerunner to the pound was the libra, which is why the lb. abbreviation stuck. Medieval England takes credit for using a pound (5400 grains) to measure metals and a mercantile pound (6750 grains) for goods.

25. A Bushel changes depending on the foodstuff.

Bushel of apples
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The USDA has assigned individual bushel measurements to different things we grow in the ground. A bushel of corn is 56 pounds, while a bushel of oats is 32 pounds.

26. A Span is 9 inches.

Six different arms outstretched
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A span isn't just a vague term for how long something is, like a bridge or wings or the length of time you can pay attention to something. It originally meant a distance of about 9 inches, or the width of a man's hand with the fingers out.

27. A Hand is now 4 inches.

Man's hands on horse
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Besides the span, we also have the hand, now mostly used for measuring horse height. It's the width of your hand with the fingers closed. But these days, it just means 4 inches no matter how gigantic your hands are.

28. A Finger is the width of your finger.

Pouring a cocktail
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Noah Webster measured the breadth of a finger and nailed it down as 3/4 of an inch, but finger has been used a lot as a unit of measurement. Thus, it's not always clear whether we're talking about the width of the finger, like when your bartender pours you two fingers of booze.

29. A Finger can also be 4.5 inches of cloth.

Fabric rolls
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This unit uses the length of a finger as the basis.

30. A Nail is 1/16 of a yard.

Woman cutting fabric
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A nail of cloth, which is based on the length of your finger from the nail to the second joint, is half a finger, or 2.25 inches. That's also 1/16 of a yard.

So, there you have it. There are about seven barleycorns in a nail, two nails in a finger, four fingers on your hand, and three hands in a foot.

31. A Centipawn measures the value of chess positions.

A hand moves a black pawn forward on a chess board
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And now let us discuss centipawns. Chess computer programs can evaluate the value of a particular piece or position in terms of hundredths of a pawn, or centipawns.

32. A Frigorie is a Calorie's nemesis.

Woman putting food container in the fridge
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You've heard of the boring old calorie, a unit that measures energy that produces heat. A Big Mac, for instance, has 550 of them. But, what about the energy to cool something? That unit of refrigeration is called a frigorie, which fell out of use in the 1970s.

33. An Oxgang is about 15 acres.

Green fields with cows
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Also lost to history is the oxgang, a unit for measuring the area of land approximately equivalent to 15 acres—or the amount of land that a farmer could plow with an ox in one season.

34. An Olf is a unit of odor.

Cat nose
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Luckily, we've still got the melodious olf. Olfs are used for measuring the air quality of indoor spaces, like offices. One olf is basically the amount of odor of one standard person. So, what's a standard person? The olf standard is a person with a skin area of 1.8 square meters, who bathes 0.7 times per day, and is seated comfortably in a comfortable temperature. If the person becomes slightly active, it rises to 5 olfs. A heavy smoker gives off 25 olfs while smoking and six while not.

35. A QuasiHemidemisemiquaver is a unit of brief musical time.

Girl's hands playing piano
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Also known as the 128th note, it lasts for 1/128 of a note. Nice how that works. Beethoven and Bach were fans.

36. You can cut the Quasihemidemisemiquaver in half.

The great news about music is that you can always go smaller: a demisemihemidemisemiquaver is a 256th note, and it's been used in works by Beethoven and Mozart. 

For more information on offbeat units of measurement, check out the video below, hosted by John Green. You'll be measuring things by fingers in a jiffy.

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Amazon's Under-the-Radar Coupon Page Features Deals on Home Goods, Electronics, and Groceries

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Stock Catalog, Flickr // CC BY 2.0

This article contains affiliate links to products selected by our editors. Mental Floss may receive a commission for purchases made through these links.

Now that Prime Day is over, and with Black Friday and Cyber Monday still a few weeks away, online deals may seem harder to come by. And while it can be a hassle to scour the internet for promo codes, buy-one-get-one deals, and flash sales, Amazon actually has an extensive coupon page you might not know about that features deals to look through every day.

As pointed out by People, the coupon page breaks deals down by categories, like electronics, home & kitchen, and groceries (the coupons even work with SNAP benefits). Since most of the deals revolve around the essentials, it's easy to stock up on items like Cottonelle toilet paper, Tide Pods, Cascade dishwasher detergent, and a 50 pack of surgical masks whenever you're running low.

But the low prices don't just stop at necessities. If you’re looking for the best deal on headphones, all you have to do is go to the electronics coupon page and it will bring up a deal on these COWIN E7 PRO noise-canceling headphones, which are now $80, thanks to a $10 coupon you could have missed.

Alternatively, if you are looking for deals on specific brands, you can search for their coupons from the page. So if you've had your eye on the Homall S-Racer gaming chair, you’ll find there's currently a coupon that saves you 5 percent, thanks to a simple search.

To discover all the deals you have been missing out on, head over to the Amazon Coupons page.

Sign Up Today: Get exclusive deals, product news, reviews, and more with the Mental Floss Smart Shopping newsletter!

50 Fascinating Facts About Cats

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Seregraff/iStock via Getty Images

From the time you wake up with a fluffy pile purring on your face to the time you go to bed with that fluffy pile purring on your face again, there are a lot of reasons to love our cats. If you want to celebrate Felis catus in all its furry glory, try sharing some of these 50 bits of cat trivia.

1. Cats spend between 30 to 50 percent of their day grooming themselves.

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Are you that clean? This behavior serves several purposes: It helps cats tone down their scent so they can avoid predators, it cools them down, it promotes blood flow, and it distributes natural oils evenly around their coat, allowing them to stay warm and dry. Grooming also serves as a sign of affection between two cats, and it’s thought that saliva contains enzymes that serve as a natural antibiotic for wounds.

2. Purring doesn't always mean a cat is happy.

Cats often make the sound when they’re content, but they also purr when they’re sick, stressed, hurt, or giving birth.

3. It's possible that purring helps bone density.

Scientists don’t quite know why cats purr, but one hypothesis is that the sound frequency of purring—between 25 and 150 Hertz—"can improve bone density and promote healing," theorizes Leslie A. Lyons, an assistant professor at the School of Veterinary Medicine at the University of California, Davis, in an article for Scientific American. "Because cats have adapted to conserve energy via long periods of rest and sleep, it is possible that purring is a low energy mechanism that stimulates muscles and bones without a lot of energy."

4. A cat's nose has catnip receptors.

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Ever wonder why catnip lulls felines into a trance? The herb contains several chemical compounds, including one called nepetalactone, which a cat detects with receptors in its nose and mouth. The compounds trigger the typical odd behaviors you associate with the wacky kitty weed, including sniffing, head shaking, head rubbing, and rolling around on the ground.

5. But most cats don't respond to catnip.

More than half of the world’s felines don’t respond to catnip. Scientists still don’t know quite why some kitties go crazy for the aromatic herb and others don’t, but they have figured out that catnip sensitivity is hereditary. If a kitten has one catnip-sensitive parent, there’s a one-in-two chance that it will also grow up to crave the plant. And if both parents react to 'nip, the odds increase to at least three in four.

6. Cats make great private detectives.

Can’t afford a private eye? A feline might be able do the job for free. In the 1960s, ambassador Henry Helb—who then lived in the Dutch Embassy in Moscow—noticed that his two Siamese kitties were arching their backs and clawing at one of the walls. Helb had a hunch that the cats heard something he couldn’t, and sure enough, he found 30 tiny microphones hidden behind the boards. Instead of busting the spies, Helb and his staff took advantage of the surveillance and griped about household repairs or packages stuck in customs while standing in front of the mics. The eavesdroppers took care of their complaints—and apart from Helb and his companions, no one was the wiser.

7. The wealthiest cat is named Blackie.

A rich British antique dealer named Ben Rea loved his cat Blackie so much that when he died in 1988, he left most of his estate—totaling nearly $13 million—to the lucky (albeit likely indifferent) feline. The money was split among three cat charities, which had been instructed to keep an eye on Rea’s beloved companion. To this day, Blackie holds the Guinness World Record for Wealthiest Cat.

8. Your cat probably hates music.

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But they might like tunes written by composer David Teie, who partnered with animal scientists to make an album called Music for Cats. Released in 2015, the songs are “based on feline vocal communication and environmental sounds that pique the interest of cats,” Teie’s website states.

9. A group of kittens is a kindle.

A kindle isn’t just an e-reader—it’s also a word that’s used to describe a group of kittens born to one mama cat. Meanwhile, a group of full-grown cats is called a clowder.

10. Many historical figures loved cats.

If you adore felines, you’re in good company: Many of history’s most famous figures—including Florence Nightingale, Pope Paul II, Mark Twain, and the Brontë sisters—all owned, and loved, cats.

11. Abraham Lincoln was a huge fan of cats.

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Still, the title of history’s craziest cat man might go to Abraham Lincoln. Mary Todd Lincoln was once asked if her husband had any hobbies. Her response? “Cats!” (He also liked dogs.)

12. If you love cats, you're an ailurophile.

Looking to elevate your vocabulary? Try using the word ailurophile in a casual conversation. It’s a fancy word for "cat lover," and it’s derived from the Greek word for cat, ailouros, and the suffix -phile, meaning "lover." Conversely, the word ailurophobe—a combination of ailouros plus phobe—describes someone who hates cats.

13. Cats first went to space in 1963.

On October 18, 1963, French scientists used a rocket to launch the first cat into space. The feline’s name was Félicette, and she made it safely to the ground following a parachute descent. Almost definitely landing on her feet.

14. The world's oldest living cat is 31 years old.

As for the world’s oldest living cat, the title belongs to a sometimes-cranky white-and-orange kitty named Rubble, who celebrated his 31st birthday in June. The average lifespan is 12-18 years.

15. The Guinness World Records don't have an award for fattest cat.

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Officials don’t want to encourage people to overfeed their pets, but in 2003, a Siamese cat named Katy was a serious contender for the unofficial record. Katy, who lived in Asbest, Russia, was given hormones to stop her mating. The treatment had an unintended side effect: It dramatically increased her appetite, and the hungry kitty ballooned to 50 pounds.

16. Cats might be marking you as territory when they massage you.

Sounds right. Experts haven’t figured out why cats like to knead, but they’ve come up with several possible explanations, one being that your kitty is trying to mark their "territory" (that’s you!) with the scent glands in their paws. And since kittens knead their mama’s belly to stimulate milk production, there’s also a chance that they carry this behavior into adulthood—a phenomenon known as a "neotenic behavior."

17. There's a cat painting worth close to $1 million.

In 2015, a 6-by-8.5-foot oil painting billed as the "world’s largest cat painting" sold at auction for more than $820,000. It’s called My Wife's Lovers, and it once belonged to a wealthy philanthropist named Kate Birdsall Johnson. She loved felines so much that she owned dozens (some even say hundreds) of kitties, and commissioned a painter to capture her Turkish Angoras and Persians in their natural element. Since Johnson’s husband called the clowder "my wife’s lovers," the nickname was selected as the artwork’s title.

18. Cats don't always land on their feet.

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Contrary to popular belief, cats don’t always land on their feet when they fall. But more often than not, all four paws end up touching the ground. Cats have a fantastic sense of balance, so they’re able to tell “up” from down and adjust their bodies accordingly. If they sense they’re plummeting downwards, they twist their flexible backbones mid-air, allowing them to right themselves so they don’t fall splat on their backs. Additionally, cats can spread their legs out to “parachute” through the air, and they’re small, light-boned, and covered in thick fur—meaning their fall isn’t going to be as hard as, say, a dog’s.

19. America's favorite breed is the Exotic.

In 2018, America’s most popular cat breed was the Exotic—a flat-faced kitty that’s essentially a short-haired version of a Persian cat. The second most beloved breed was the Ragdoll, and the British Shorthair ranked at No. 3.

20. T.S. Eliot thought cats were more poetic than dogs.

The musical Cats is based on a collection of T.S. Eliot poems called Old Possum’s Book of Practical Cats. Published in 1939, it follows the whimsical antics of a group of felines—but the manuscript was originally intended to feature dogs, too. In the end, though, Eliot determined that "dogs don’t seem to lend themselves to verse quite so well, collectively, as cats."

21. Your cat might be allergic to you.

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Usually we think it's the other way around, but even if you’re not allergic to cats, your cat might be allergic to you. One in 200 cats are believed to have asthma—and this number continues to rise among indoor kitties as they're more frequently exposed to cigarette smoke, dust, human dandruff, and pollen.

22. Japan has a cat who manages a train station.

A train station in Southeastern Japan is presided over by an adorable "stationmaster": a 7-year-old calico cat named Nitama. The Kishi train station near Wakayama City hired Nitama in 2015, just a few months after its prior feline mascot, Tama, died from acute heart failure at the age of 16.

23. Cheetahs aren't the only cats that are fast.

Greyhound dogs are the ones with a bus line named after them, and cheetahs get the prestige, but house cats are pretty speedy, too: The average running feline can clock around 30 mph. That's enough to get a ticket in a school zone.

24. Yes, ancient Egyptians loved cats.

The ancient Egyptians revered cats, and even worshiped a half-feline goddess named Bastet. People who harmed or killed cats faced harsh legal sentences, including the death penalty.

25. No one knows why black cats are considered to be bad luck in some cultures.

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This myth has persisted across Western civilization for centuries. Felines with dark fur first became linked with the Devil during the Middle Ages, and when the Black Death pandemic ravaged Europe in the mid-14th century, superstitious individuals responded by killing off the black cat population. Little did they know that vermin carried the deadly disease and that the rodent-eating cats actually helped curb its spread. And black cats eventually became associated with witches because women accused of practicing black magic tended to adopt alley cats as companions.

26. In Great Britain and Japan, black cats are good luck.

Black cats are considered to be a bad omen in the U.S., but in Great Britain and Japan, they’re perceived as auspicious. In the English Midlands, new brides are given black cats to bless their marriage, and the Japanese believe that black cats are good luck—particularly for single women. Meanwhile, the Germans believe that a black cat crossing your path from left to right is ominous, but if the feline switches directions and goes right to left, it’s fortuitous.

27. Nyan Cat was based on a real cat.

Remember Nyan Cat? The famous viral meme of a gray kitty with a Pop-Tart body who shoots rainbows from its posterior (the internet, folks!) was based on a real-life feline: a Russian Blue named Marty, owned by Nyan cat illustrator Chris Torres.

28. Cats can't taste sweets.

Cats are genetically predisposed to not be able to taste sweets. They will likely nibble off your plate if it contains meat, but they’ll leave it alone if it’s laden with cake.

29. Cat shows have been around since at least 1871.

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The world’s first major cat show was held at London’s Crystal Palace in July 1871. Hundreds of felines (and dozens of breeds) were placed on display, and around 200,000 guests are said to have attended the event.

30. Some breeds get heavy.

Most cats weigh in the single or low-double digits, but some breeds are truly huge. For instance, Norwegian Forest Cats, Maine Coons, and Ragdolls often range in weight from 15 to 22 pounds. You should know this before you catsit for your friend with a Maine Coon.

31. Cute cat videos have been around for more than a century.

Long before Keyboard Cat took the internet by storm, inventor Thomas Edison filmed two kitties "boxing" inside a ring. Created in 1894, the brief clip proves that humans have been obsessed with cute cat videos since long before the advent of YouTube.

32. There was a video game based on President Clinton's cat.

Socks the Cat, a black-and-white tuxedo cat, was owned by Bill Clinton’s family during his time in the Oval Office. If you're like me, your third grade class handwrote letters to Socks. Anyway, during the early 1990s, Super Nintendo Entertainment System created a video game called Socks the Cat, featuring the First Feline. It was never officially released, and when the game’s publisher shut down, Socks the Cat was lost for years, until video game collector Tom Curtin bought the (reportedly) only existing copy, purchased the rights, and partnered with game publisher Second Dimension to give it a second life. Socks the Cat Rocks The Hill was finally released in 2018.

33. Some cats have extra toes.

iStock

Beyond their impressive size, Maine Coon cats are sometimes born with six toes.

34. Male cats have barbed penises.

While painful for the lady cat, they do serve a purpose: The barbs stimulate the vulva, allowing the female to ovulate, and they also keep her from escaping mid-coitus. (Felines are typically loners, and not that into sex.)

35. People who go to college are more likely to have a cat.

If you went to college, you’re more likely to have a cat than a dog. In 2010, researchers from the University of Bristol surveyed 3000 people about their pets, geography, and scholastic history. They found that people with university degrees were 1.36 times more likely to own a kitty than other pet owners. This phenomenon might be attributed to the fact that cats are low-maintenance, and therefore better companions for accomplished people with busy careers.

36. Your cat has more bones than you do.

A cat has 244 bones in its entire body—even more than a human, who only has 206 bones.

37. Not all cats have fur.

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Sphinx cats don’t have fur coats, but their body temperature is still four degrees warmer than a typical feline.

38. Most cats don't like getting wet because they lose control.

Experts think that cats hate water because it’s uncomfortable to have soggy fur, or because it’s frightening for a kitty to lose control of its buoyancy.

39. But not all cats hate water.

While many kitties do, breeds including the Turkish Van, Maine Coons, and Bengals are said to enjoy taking a dip every now and then.

40. Cats like small spaces.

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Why do cats love to cuddle up in boxes? Animal experts think that the enclosed spaces make felines feel more protected, secure, and important—kind of like they’re back in the womb. (Sure enough, researchers found that when shelter cats are provided with boxes to cuddle up in, they adjust faster and are less stressed than kitties that aren't given boxes.) Also, sleeping in a box might help a feline retain more body heat so it stays nice and toasty, and therefore relaxed.

41. We don't know why cats meow.

Nobody knows quite why cats meow, but experts think they might be channeling their inner kitten. Baby cats make the plaintive noises to get their mother’s attention, but as full-grown felines, they don't meow while interacting with other cats. Some experts think that felines use the noises they made as infants with humans to convey their emotions and physical needs.

41. Cats can sweat.

Cats sweat through their paws (and sometimes when they get very hot they pant).

42. Most of their lives are spent sleeping.

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Beyond grooming all the time, according to one estimate, a cat spends nearly two-thirds of its life asleep.

43. Some hotels have lobby cats.

Just like bodegas, the iconic Algonquin Hotel in midtown Manhattan owns a pampered lobby cat named Hamlet. He's one of a dozen rescue felines that have lived in the storied institution since the early 1920s. Hamlet took over the post following three Matildas. (Matilda III passed away in October 2017.)

44. Disneyland has a lot of feral cats (with an important job).

Approximately 200 feral cats roam the grounds of Disneyland, where they help control the amusement park’s rodent population. They’re all spayed or neutered, and park staffers provide them with medical care and extra food.

45. Cats are not good at delivering mail.

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In the 1870s, the city of Liège, Belgium tried to train 37 cats to deliver the mail. Letters were enclosed in waterproof bags tied around the kitties’ necks, but it turns out that cats weren’t great at delivering the goods on time (or to the correct address). But maybe we simply haven't found the correct training method yet.

46. Quotation marks have a feline connection.

The Hungarian word for "quotation marks," macskaköröm, literally translates to "cat claws."

47. There are more pet cats in the u.s. than pet dogs.

There are an estimated 85.8 million pet cats in the U.S. In contrast, there are only an estimated 78 million dogs.

48. Not all historical figures loved cats.

vizland/iStock via Getty Images

Napoleon, Caesar, Genghis Khan, and Hitler are all said to have hated cats.

50. Cats can jump up to five times their own height.

Or six times its length—and make the entire thing look easy.

This story has been updated for 2020.