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16 Fun Facts About Hedgehogs

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After cats, hedgehogs might be the internet's favorite animal. But how much do you know about these spiky mammals—other than how cute they look when getting a bath?

1. A GROUP OF HEDGEHOGS IS CALLED AN "ARRAY."

But it doesn't come up much, since hedgehogs are solitary creatures who usually come together only to mate.

2. HEDGEHOGS ARE ILLEGAL IN MAINE, ARIZONA, CALIFORNIA, GEORGIA, PENNSYLVANIA, HAWAII, AND NEW YORK CITY.

The hedgie as a pet has gained popularity in the past decade—but some cities and states still qualify them as wild animals, which are not allowed to be kept domestically.

3. A HEDGEHOG HAS BETWEEN 5000 AND 7000 QUILLS.

Muscles along the animal's back can raise and lower the quills to respond to threatening situations.

4. THERE ARE 17 DIFFERENT SPECIES OF HEDGEHOG, NONE OF WHICH ARE NATIVE TO AMERICA.

Australia also has no indigenous hedgehogs; the hedgies in New Zealand were introduced by humans.

5. HEDGEHOGS RELY ON HEARING AND SMELL BECAUSE THEY HAVE VERY POOR EYESIGHT.

And even their limited sight is best in the dark as an adaption to their nocturnal lifestyle.

6. UNLIKE PORCUPINE QUILLS, HEDGEHOG SPIKES ARE NOT BARBED, AND THEY'RE NOT POISONOUS.

The inside of the quills are mostly hollow, with a series of complex air chambers that make them light but strong.

7. HEDGEHOGS GOT THEIR NAME FROM THEIR PREFERRED HABITAT—GARDEN HEDGES—AND THE PIG-LIKE GRUNTS THEY MAKE.

Their taste for destructive insects makes them a historically welcome presence in English gardens.

8. HEDGEHOGS CAN HIBERNATE, BUT NOT ALL DO.

Which makes them one of only three animals in Great Britain that hibernate.

9. HEDGEHOGS ARE LARGELY IMMUNE TO SNAKE VENOM.

This means that, although their typical diet consists of insects and berries, they can take down a viper in a fight and eat it, too.

10. THE SEA URCHIN IS ACTUALLY NAMED AFTER THE HEDGEHOG.

Before the more adorable name came into use, the spiky mammals were called "urchins" and thus inspired the name of the similarly spiky sea creatures.

11. MEDIEVAL BESTIARIES AND ILLUMINATED TEXTS SHOW HEDGEHOGS GATHERING FOOD WITH THEIR QUILLS.

This is inaccurate. But affinity for the image has persisted.

12. IN THE PRECURSOR TO GROUNDHOG DAY, HEDGEHOGS WERE THE SUPPOSEDLY PORTENTOUS CRITTERS.

But when German settlers got to America and found no hedgehogs, they turned to the similar-enough groundhog for their winter-weather predictions.

13. IN NEW ZEALAND, MCGILLICUDDY'S SERIOUS PARTY ONCE TRIED TO GET A HEDGEHOG ELECTED TO PARLIAMENT.

They were unsuccessful.

14. THERE USED TO BE SUCH A THING AS THE INTERNATIONAL HEDGEHOG OLYMPIC GAMES (IHOG).

Events included sprints, hurdles, and floor exercises.

15. ONE OF THE LESSER KNOWN BROTHERS GRIMM FAIRY TALES IS CALLED HANS MY HEDGEHOG, ABOUT A BOY WHO IS BORN HALF HEDGEHOG.

Not your style? Try The Hare and The Hedgehog.

16. WHEN EXPOSED TO PUNGENT SMELLS OR TASTES, HEDGEHOGS EXHIBIT A BEHAVIOR CALLED "SELF-ANOINTING," IN WHICH THEY RUB FROTHY SALIVA ON THEIR QUILLS.

The purpose of this behavior is unknown.

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Authorities Want This Roadside Bear Statue in Wales Removed Before It Causes More Accidents
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There are no real bears in the British Isles for residents to worry about, but a statue of one in the small Welsh town of Llanwrtyd Wells has become a cause of concern. As The Telegraph reports, the statue is so convincing that it's scaring drivers, causing at least one motorist to crash her car. Now road safety officials are demanding it be removed.

The 10-foot wooden statue has been a fixture on the roadside for at least 15 years. It made headlines in May of 2018 when a woman driving her car saw the landmark and took it to be the real thing. She was so startled that she veered off the road and into a street sign.

After the incident, she complained about the bear to highways officials who agreed that it poses a safety threat and should be removed. But the small town isn't giving in to the Welsh government's demands so quickly.

Wooden bear statue.

The bear statue was originally erected on the site of a now-defunct wool mill. Even though the mill has since closed, locals still see the statue as an important landmark. Llanwrtyd Wells councilor Peter James called it an "iconic gateway of the town," according to The Telegraph.

Another town resident, who wished to remain anonymous, told The Telegraph that the woman who crashed her car had been a tourist from Canada where bears are common. Bear were hunted to extinction in Britain about 1000 years ago, so local drivers have no reason to look out for the real animals on the side of the road.

The statue remains in its old spot, but Welsh government officials plan to remove it themselves if the town doesn't cooperate. For now, temporary traffic lights have been set up around the site of the accident to prevent any similar incidents.

[h/t The Telegraph]

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10 Scientific Benefits of Being a Dog Owner
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The bickering between cat people and dog people is ongoing and vicious, but in the end, we're all better off for loving a pet. But if anyone tries to poo-poo your pooch, know that there are some scientific reasons that they're man's best friend.

1. YOU GET SICK LESS OFTEN.

Dog snuggling on a bed with its person.
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If cleaning commercials are to be believed, humanity is in the midst of a war against germs—and we shouldn't stop until every single one is dead. In reality, the amount of disinfecting we do is making us sicker; since our bodies are exposed to a less diverse mix of germs, our entire microbiome is messed up. Fortunately, dogs are covered in germs! Having a dog in the house means more diverse bacteria enters the home and gets inside the occupants (one study found "dog-related biodiversity" is especially high on pillowcases). In turn, people with dogs seem to get ill less frequently and less severely than people—especially children—with cats or no pets.

2. YOU'RE MORE RESISTANT TO ALLERGIES.

Child and mother playing with a dog on a bed.
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While dog dander can be a trigger for people with allergies, growing up in a house with a dog makes children less likely to develop allergies over the course of their lives. And the benefits can start during gestation; a 2017 study published in the journal Microbiome found that a bacterial exchange happened between women who lived with pets (largely dogs) during pregnancy and their children, regardless of type of birth or whether the child was breastfed, and even if the pet was not in the home after the birth of the child. Those children tested had two bacteria, Ruminococcus and Oscillospira, that reduce the risk of common allergies, asthma, and obesity, and they were less likely to develop eczema.

3. YOU'LL HAVE BETTER HEART HEALTH.

Woman doing yoga with her dog.
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Everything about owning a dog seems to lend itself to better heart health. Just the act of petting a dog lowers heart rate and blood pressure. A 2017 Chinese study found a link between dog ownership and reduced risk of coronary artery disease, while other studies show pet owners have slightly lower cholesterol and are more likely to survive a heart attack.

4. YOU GET MORE EXERCISE.

Person running in field with a dog.
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While other pets have positive effects on your health as well, dogs have the added benefit of needing to be walked and played with numerous times a day. This means that many dog owners are getting 30 minutes of exercise a day, lowering their risk of cardiovascular disease.

5. YOU'LL BE HAPPIER.

Woman cuddling her dog.
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Dog owners are less likely to suffer from depression than non-pet owners. Even for those people who are clinically depressed, having a pet to take care of can help them out of a depressive episode. Since taking care of a dog requires a routine and forces you to stay at least a little active, dog owners are more likely to interact with others and have an increased sense of well-being while tending to their pet. The interaction with and love received from a dog can also help people stay positive. Even the mere act of looking at your pet increases the amount of oxytocin, the "feel good" chemical, in the brain.

6. YOU HAVE A MORE ACTIVE SOCIAL LIFE.

Large bulldog licking a laughing man.
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Not only does dog ownership indirectly tell others that you're trustworthy, your trusty companion can help facilitate friendships and social networks. A 2015 study published in PLOS One found that dogs can be both the catalyst for sparking new relationships and also the means for keeping social networks thriving. One study even showed that those with dogs also had closer and more supportive relationships with the people in their lives.

7. YOUR DOG MIGHT BE A CANCER DETECTOR.

Man high-fiving his dog.
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Your dog could save your life one day: It seems that our canine friends have the ability to smell cancer in the human body. Stories abound of owners whose dogs kept sniffing or licking a mole or lump on their body so they got it checked out, discovering it was cancerous. The anecdotal evidence has been backed up by scientific studies, and some dogs are now trained to detect cancer.

8. YOU'LL BE LESS STRESSED AT WORK.

Woman working on a computer while petting a dog.
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The benefits of bringing a dog to work are so increasingly obvious that more companies are catching on. Studies show that people who interact with a pet while working have lower stress levels throughout the day, while people who do not bring a pet see their stress levels increase over time. Dogs in the office also lead to people taking more breaks, to play with or walk the dog, which makes them more energized when they return to work. This, in turn, has been shown to lead to much greater productivity and job satisfaction.

9. YOU CAN FIND OUT MORE ABOUT YOUR PERSONALITY.

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The kind of dog you have says a lot about your personality. A study in England found a very clear correlation between people's personalities and what type of dogs they owned; for example, people who owned toy dogs tended to be more intelligent, while owners of utility dogs like Dalmatians and bulldogs were the most conscientious. Other studies have found that dog owners in general are more outgoing and friendly than cat owners.

10. YOUR KIDS WILL BE MORE EMPATHETIC.

A young boy having fun with his dog.
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Though one 2003 study found that there was no link between pet ownership and empathy in a group of children, a 2017 study of 1000 7- to 12-year-olds found that pet attachment of any kind encouraged compassion and positive attitudes toward animals, which promoted better well-being for both the child and the pet. Children with dogs scored the highest for pet attachment, and the study notes that "dogs may help children to regulate their emotions because they can trigger and respond to a child's attachment related behavior." And, of course, only one pet will happily play fetch with a toddler.

A version of this story originally ran in 2015.

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