Meet 6 of the World's Smartest Dog Breeds

iStock.com/David Sokoler
iStock.com/David Sokoler

All dogs are very good dogs. And each one is smart in a variety of unique ways. But there are some dog breeds that are just born with an inherent leg up in the intelligence department. Here are six of the world's smartest dog breeds, according to Cesar's Way.

1. German Shepherd

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There's a reason why German shepherds are regularly employed as police dogs and service dogs—and, yes, it has a lot to do with how smart they are. This fiercely loyal breed is also great with kids, making them a great family pet.

2. Labrador Retriever

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Labrador retrievers are intelligent, gentle, family-friendly dogs. They are the most popular dog breed in America, and they make excellent guide dogs and rescue dogs.

3. Border Collie

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Border collies are great working and sheep herding dogs. They're athletic and agile but, most importantly, they love cuddling.

4. Golden Retriever

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Golden retrievers are intelligent, friendly, and devoted sporting dogs. Goldens are great at hunting, and have spent years serving as seeing-eye dogs and working in search-and-rescue jobs. They're lovable and loyal, too.

5. Shetland Sheepdog

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Shetland sheepdogs are playful, intelligent, affectionate, and loyal. They love to learn new tricks and they make great watchdogs.

6. Poodle

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Poodles are very smart, proud, and active dogs—plus, they're hypoallergenic. Poodles are easily trained to track, hunt, retrieve, and obey.

11 Masks That Will Keep You Safe and Stylish

Design Safe/Designer Face Covers/Its All Goods
Design Safe/Designer Face Covers/Its All Goods

Face masks are going to be the norm for the foreseeable future, and with that in mind, designers and manufacturers have answered the call by providing options that are tailored for different lifestyles and fashion tastes. Almost every mask below is on sale, so you can find one that fits your needs without overspending.

1. Multicolor 5-pack of Polyester Face Masks; $22 (56 percent off)

Home Essentials

This set of five polyester masks offers the protection you need in a range of colors, so you can coordinate with whatever outfit you're wearing.

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2. 3D Comfort Masks 5-Pack; $20 (25 percent off)

Brio

The breathable, stretchy fabric in these 3D masks makes them a comfortable option for daily use.

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3. Reusable Face Masks 2-pack; $15 (50 percent off)

Triple Grade

This cotton mask pack is washable and comfortable. Use the two as a matching set with your best friend or significant other, or keep the spare for laundry day.

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4. Active Masks 3-pack; $23 (14 percent off)

RipleyRader

Don’t let masks get in the way of staying active. These double-layer cotton masks are breathable but still protect against those airborne particles.

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5. Washable Protective Cotton Face Masks 2-pack; $13 (35 percent off)

Its All Good

Avoid the accidental nose-out look with this cotton mask that stays snug to your face.

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6. Washable 3D Masks 12-pack; $24 (44 percent off)

Elicto

With this 12-pack of protective masks, you can keep a few back-ups in your car and hand the rest out to friends and family who need them.

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7. Reusable Dust-Proof Mask with 5 Filters; $22 (45 percent off)

Triple Grade

This dust-proof mask can filter out 95 percent of germs and other particles, making it a great option for anyone working around smoke and debris all day, or even if you're just outside mowing the lawn.

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8. Reusable Fun Face Cover / Neck Gaiter (Flamingo); $20

Designer Face Covers

Channel some tropical energy with this flamingo fabric neck gaiter. The style of this covering resembles a bandana, which could save your ears and head from soreness from elastic loops. Other designs include a Bauhaus-inspired mask and this retro look.

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9. Seamless Bandana Mask; $8 (52 percent off)

Eargasm Earplugs

This seamless gaiter-style mask can be worn properly for protection and fashioned up into a headband once you're in the car or a safe space. Plus, having your hair out of your face will help you avoid touching your eyes, nose, and mouth before washing your hands.

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10. Two-Ply "Love" Face Masks 2-Pack; $18 (40 percent off)

Design Safe

These statement masks allow you to have a voice, even if your mouth is covered.

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11. Neoprene/Fleece Neck and Face Mask (Purple); $10 (66 percent off)

Its All Good

This mask will definitely come in handy once winter rolls around. It features a fleece neck, face, and ear covering to keep your mask secure and your face warm.

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Prices subject to change.

This article contains affiliate links to products selected by our editors. Mental Floss may receive a commission for purchases made through these links. If you haven't received your voucher or have a question about your order, contact the Mental Floss shop here.

A Two-Toed Sloth Accidentally Hitched a 40-Mile Ride in a Truck's Engine Bay

Tony Hisgett, Wikimedia Commons // CC BY 2.0
Tony Hisgett, Wikimedia Commons // CC BY 2.0

Most sloths move at a maximum speed of 6 to 8 feet per minute, but one two-toed sloth in Costa Rica shattered that pace on a recent joy ride. As Jalopnik reports, the female sloth traveled 40 miles after sneaking into a truck’s engine bay undetected.

The vehicle's drivers noticed something was out of place when they stopped to check the engine and saw a tuft a fur. They reached out to Toucan Rescue Ranch, a wildlife rehabilitation center near San Jose, which identified the stowaway as a two-toed sloth. Though it had been on board for over an hour, the animal managed to survive the road trip unscathed.

The animal caretakers at TRR dubbed the sloth Lola la Trailera, or "Lola the Truck Driver," after the 1983 Mexican action movie of the same name. She was exhausted and aggressive when she arrived at the center, but after feeding her a diet of Pedialyte, wild leaves, and steamed veggies, the caretakers were able to restore her to full health. She was returned to the forest she originated from following six days of rehabilitation.

A sloth's usual lack of speed isn't a sign of laziness—it's a survival tactic. Fat and protein are limited in the rainforest canopies where sloths reside, so they must conserve energy by limiting their activity. But as Lola la Trailera proved, sloths have the potential to move much faster with a little assistance.

[h/t Jalopnik]