Theodore Roosevelt, the 26th U.S. president, had a menagerie that included everything from dogs and bears to rodents and a one-legged rooster.

Monster-like creatures live thousands of feet below the surface, and they've adapted to hostile environments by taking on cool — and scary — physical traits.

billy barr spent the last 40 years living alone in a cabin in Gothic, Colorado, and collecting meticulous weather data about temperatures, snowfall and more.

Studies show that we track fecal matter, potentially deadly bacteria and fungus into our homes when we wear our shoes inside.

When you think of stained teeth, you may be quick to blame coffee. But there are other foods and beverages that could be tingeing your pearly whites.

Manufacturers don't have to tell you what fragrance chemicals are in the products you use, but those chemicals can cause health issues.

Each year during the Ocean Conservancy's International Coastal Cleanup, thousands of people remove trash from local waterways.

Studies show we emit chemicals that communicate emotion, and whether we realize it or not, our brain responds to fear alarms.

New England's fall foliage wasn't always so colorful. Today's gorgeous scenery is the result of one of history's deadliest hurricanes.

The Natural History Museum, London, announced the finalists for its 53rd Wildlife Photographer of the Year contest.

Peatlands have the power to release huge amounts of carbon and greenhouse gases, but these mucky wetlands also help control floods and forest fires.

A spectacular scene unfolds every year in Chiang Mai, Thailand, when thousands of candle-lit paper lanterns are released into the sky and Ping River.

Probiotics, whether in supplement or food form, are a booming industry, but the science behind the health benefit claims is still catching up.

New research shows that viral infections can evolve to affect men worse than women because the viruses consider women to be more valuable hosts.

If you're trying to lose weight, the time of day when you eat matters just as much as how many calories you eat, new research suggests.

The International Dark-Sky Association bestows the honor on national parks and monuments that limit light pollution to preserve the night sky.

Dan Mackay, found thousands of dog tags near London and is on a mission to reunite them with surviving veterans or their relatives.

The Azores archipelago off the coast of Portugal is home to some of the most gorgeous — and most plentiful — hydrangeas in the world.

The Great Green Wall is rooted in Africa's Sahel region on the southern border of the Sahara. Once completed, it will be the largest living structure on Earth.

'Magic' indeed: Many edible varieties of mushrooms are packed with vitamins, can boost your immunity, lower inflammation and help prevent cancer.

Screaming is primal. Whether it’s pain, horror or a baby's cry, a scream demands attention. Why do we scream, and why does the sound of one make us react?

Gray hair may indicate more than our biological age: It could signal one of these health issues, including heart disease or vitamin deficiency.

The series, which is celebrating its 50th anniversary this month, has the highest number of adult-child coviewing experiences of any children’s show.

'To Be of Service' film shows how service dogs help veterans return to the world.

The U.S. Women's Soccer team got a visit from service dogs in training before their match Thursday.

Researchers have a new way of figuring out your dog's age in people years, and it doesn't involve multiplying by 7.

Belinda Richards captures pet personalities and turns them into art.

The U.S. Consumer Product Safety Commission shows why fire safety is important for the holiday season.

Narwhal, the healthy and happy unicorn puppy, has a tail growing out of his forehead.

Kindergarten class in Michigan joins their 5-year-old classmate in court for his official adoption.

Research shows that reading to dogs helps struggling kids learn to read.

The holiday isn't complete until you've seen The Old Man open his frageelay leg lamp. We double dog dare ya to resist these famed A Christmas Story quotes.

Max and Neo sends donation boxes to thousands of rescue groups every year.

A UPS driver thought he saw something in the snow. Turns out it was a tiny, white puppy that had been abandoned.

Boy asks his friends to celebrate his birthday by volunteering at an animal shelter.

From amazing puppy rescues to grumpy feral cats, the decade was filled with wonderful pet stories that will warm your heart.

When a shelter is 'no kill,' that doesn't always mean that every animal makes it out of there alive.

Wolf puppies pick up on human cues and can catch and return balls.

Clean your dogs ears regularly with some cotton or gauze as part of your regular grooming routine.

Whether they chase them, chew them or hunt for them, sticks make these dogs very happy.

Feb. 29 is more than just a weird day to have a birthday. There are a lot of traditions guided by this almost-every-four-year surprise.

A tiny poodle named Porschia not only escaped a hawk's clutches, but made it back home again.

After years in decline, drive-ins are prospering amid the coronavirus pandemic.

Animal shelters around the U.S. are running out of adoptable animals as more people take in fosters and adopt pets because they're at home more.

Greenland's ice sheet is melting so fast it lost 11 billion tons of ice in just a day.

July 2019 was the planet's warmest month since record-keeping began in 1880, according to NOAA.

In the U.K., magnetic north and true north are about to be in perfect alignment.

Residents of the coastal Southeast are bracing for Hurricane Dorian as this slow-moving storm moves north.

For four-legged creatures, lightning strikes create an especially lethal ground current.

30 of the world's largest cities have reduced greenhouse gas emissions.