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15 Times Animals Saved the Day

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Animals help us in ways too numerous to count. At the global level, they’re an indispensable part of the natural systems that keep humans healthy. And at the individual level, they give us priceless companionship. But they’ve also assisted us in less-obvious ways. Here are a few surprising times that animals have swooped in—or crawled in, or swam in—to save the day.


At Wimbledon, pigeons are a problem. They love to eat the seed that is used to maintain the courts’ grassy carpet, and they’ll occasionally amble onto the courts and interrupt play. But pigeons are afraid of hawks and falcons, so raptors are a natural way to keep them at bay. A trained Harris hawk named Rufus holds the official title of “Bird Scarer” for the Wimbledon Championships. Rufus’ owner has him fly around the complex to keep pigeons away. Besides his work in the service of tennis, this hawk has also shooed away pigeons from hospitals, airfields, Westminster Abbey, and other sites.


Slugs may spell death for your garden plants, but they can also protect human lives. That’s because they’re able to detect deadly poison. In the early 20th century, Dr. Paul Bartsch, a mollusk expert at the U.S. National Museum, kept great grey garden slugs (also known as leopard slugs) in his home. One day his slimy charges escaped into his furnace room, and they reacted to gas fumes by hunching up and closing their breathing holes. Intrigued, Bartsch ran experiments and found that slugs also reacted to very low levels of mustard gas. During World War I, soldiers began to bring these humble critters into the trenches as an early warning system. 


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Collisions between birds and planes can cause engine failures and crashes. At Salt Lake City International Airport, domestic pigs have been used in recent years to keep birds away. Because pigs will disturb nests and eat eggs, their presence scares away the local population of California gulls, preventing the seabirds from nesting too near the airport. 


A person who loves wine is an oenophile. And if you’re one of them, you might want to give thanks to barn owls. Rodents are a big problem in vineyards; pocket gophers, for example, form networks of tunnels through the soil and chew on roots and vines. Luckily, barn owls make a big dent in rodent populations. In California, grape growers have been putting up nesting boxes to boost owl populations and keep their crop safe.


The fantastically named magician’s cone is a sea snail that uses highly toxic venom to hunt fish. This venom is amazing stuff; it contains substances that work rapidly and target highly specific spots. Researchers figured out how to harness magician’s cone venom for medicine and used it to create a painkilling drug. Approved by the FDA in 2004, Ziconotide provides relief for patients who don’t respond to traditional painkillers.


With the help of a jellyfish called the crystal jelly, three scientists discovered an incredible way to peer into the hidden inner workings of cells. Osamu Shimomura, Roger Y. Tsien, and Martin Chalfie figured out how to attach a fluorescent jellyfish protein to proteins and follow them like a glowing beacon. They won the 2008 Nobel Prize in Chemistry for their work, and this major advancement has helped researchers around the world fight cancer, follow the spread of dangerous viruses, and do much more.


Bones are a treasure trove of information for scientists. But cleaning the meat and other material from a skeleton is harder than you’d think—especially when you’re working with tiny, delicate specimens. Enter dermestid beetles. The larvae of these insects eat everything but the bones, quickly and effectively cleaning valuable specimens. Several museums maintain colonies of these useful beetles. 


Anyone who’s had a pet ferret knows that they love exploring tubes. Wild ferrets use their skinny bodies to hunt rabbits in their burrows. In 1971, a visiting physicist at Fermilab’s Meson Laboratory figured out a novel method for cleaning the vacuum chamber pipes that were essential to the center’s experiments. Carrying a string, a ferret named Felicia scurried through the tubes in exchange for tasty treats. Researchers used the string to pull cleaning rags through the tubes.



Dogs are renowned for their ability to find lost people, but they can also help biologists track endangered species. Handlers have taught canines to detect the poop of wolverines, right whales, giant anteaters, gorillas, and all sorts of other creatures, giving scientists more insight into the natural world.


Here’s another way that dogs use their noses to do good. Bed bugs can cause itching and misery, and they also make a musty smell. Some exterminators use trained dogs to sniff out these household pests. If you’d like to enlist the services of a bed bug dog, be sure to do your research—poorly trained dogs may fake a discovery just to get an extra treat.


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Cheetahs are notoriously nervous. When frightened, they’re more likely to beat a hasty retreat than to fight. To keep them calm, some zookeepers have paired cheetahs with dogs. The canines, often from animal shelters, provide companionship and keep the cats feeling safe. Dogs are helping wild cats, too; in Namibia, cheetahs sometimes prey on farm animals, so the Cheetah Conservation Fund gives guard dogs to farmers as a harmless way to deter predators.


African giant pouched rats have tremendous powers of smell. APOPO, a Belgian nonprofit based in Tanzania, is training these rodents to cheaply and quickly detect tuberculosis in laboratory samples. In rural Angola, Gambian giant pouched rats been used to sniff out land mines.


Narwhals are amazing arctic whales, and, like much of life on Earth, they’re at risk from the effects of a changing climate. In 2010, Kristin Laidre of the University of Washington led researchers in an effort to measure ocean temperatures in Baffin Bay using narwhals. They tagged the whales with sensors that tracked temperatures on deep dives to the seafloor, providing insight into Earth’s climate. As these kinds of sensors become smaller and cheaper, more animals are helping science by turning into data collectors.


European glow worms aren’t really worms—they’re female beetles that use light to attract mates. In the trenches of World War I, soldiers gathered them into jars and used their natural illumination to read important reports, letters, and maps.


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Japan’s famous bullet trains, or Shinkansen, can travel at an astonishing 200 miles per hour. To reach high speeds without causing too much noise, these trains must be the perfect shape to slice through the air. Designers took inspiration from the common kingfisher, a bird with a long, sharp bill that dives into water at high speed to catch its fishy prey. Bullet trains now have slender, pointed noses based on kingfisher beaks.

Big Questions
Why Do Cats 'Blep'?

As pet owners are well aware, cats are inscrutable creatures. They hiss at bare walls. They invite petting and then answer with scratching ingratitude. Their eyes are wandering globes of murky motivations.

Sometimes, you may catch your cat staring off into the abyss with his or her tongue lolling out of their mouth. This cartoonish expression, which is atypical of a cat’s normally regal air, has been identified as a “blep” by internet cat photo connoisseurs. An example:

Cunning as they are, cats probably don’t have the self-awareness to realize how charming this is. So why do cats really blep?

In a piece for Inverse, cat consultant Amy Shojai expressed the belief that a blep could be associated with the Flehmen response, which describes the act of a cat “smelling” their environment with their tongue. As a cat pants with his or her mouth open, pheromones are collected and passed along to the vomeronasal organ on the roof of their mouth. This typically happens when cats want to learn more about other cats or intriguing scents, like your dirty socks.

While the Flehmen response might precede a blep, it is not precisely a blep. That involves the cat’s mouth being closed while the tongue hangs out listlessly.

Ingrid Johnson, a certified cat behavior consultant through the International Association of Animal Behavior Consultants and the owner of Fundamentally Feline, tells Mental Floss that cat bleps may have several other plausible explanations. “It’s likely they don’t feel it or even realize they’re doing it,” she says. “One reason for that might be that they’re on medication that causes relaxation. Something for anxiety or stress or a muscle relaxer would do it.”

A photo of a cat sticking its tongue out

If the cat isn’t sedated and unfurling their tongue because they’re high, then it’s possible that an anatomic cause is behind a blep: Johnson says she’s seen several cats display their tongues after having teeth extracted for health reasons. “Canine teeth help keep the tongue in place, so this would be a more common behavior for cats missing teeth, particularly on the bottom.”

A blep might even be breed-specific. Persians, which have been bred to have flat faces, might dangle their tongues because they lack the real estate to store it. “I see it a lot with Persians because there’s just no room to tuck it back in,” Johnson says. A cat may also simply have a Gene Simmons-sized tongue that gets caught on their incisors during a grooming session, leading to repeated bleps.

Whatever the origin, bleps are generally no cause for concern unless they’re doing it on a regular basis. That could be sign of an oral problem with their gums or teeth, prompting an evaluation by a veterinarian. Otherwise, a blep can either be admired—or retracted with a gentle prod of the tongue (provided your cat puts up with that kind of nonsense). “They might put up with touching their tongue, or they may bite or swipe at you,” Johnson says. “It depends on the temperament of the cat.” Considering the possible wrath involved, it may be best to let them blep in peace.

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Why Crows Hold Noisy Funerals for Their Fallen Friends

The next time you hear a murder of crows cackling for no apparent reason, show a little respect: You may have stumbled onto a crow funeral. Crows are among the few animals that exhibit a social response to a dead member of their species. Though their caws may sound like heartbroken cries, such funerals aren't so much about mourning their fallen friends as they are about learning from their mistakes.

In the video below from the PBS series Deep Look, Kaeli Swift, a researcher at the University of Washington's Avian Conservation Lab, investigates this unusual phenomenon firsthand. She familiarized herself with a group of crows in a Seattle park by feeding them peanuts in the same spot for a few days. After the crows got used to her visits, she returned to the site holding a dead, taxidermied crow and wearing a mask and wig to hide her identity. The crows immediately started their ritual by gathering in the trees and crying in her direction. According to Swift, this behavior is a way for crows to observe whatever might have killed the dead bird and learn to avoid the same fate. Flocking into a large, noisy group provides them protection from the threat if it's still around.

She tested her theory by returning to the same spot the next week without her mask or the stuffed crow. She offered the crows peanuts just as she had done before, only this time the birds were skittish and hesitant to take them from her. The idea that crows remember and learn from their funerals was further supported when she returned wearing the mask and wig. Though she didn't have the dead bird with her this time, the crows were still able to recognize her and squawked at her presence. Even birds that weren't at the funeral learned from the other birds' reactions and joined in the ruckus.

Swift was lucky this group of crows wasn't particularly vengeful. Crows have been known to nurse and spread grudges, sometimes dive-bombing people that have harmed one of their own.

[h/t Deep Look]


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