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

A ghost forest occurs when sea levels rise and flood healthy coastal forests with saltwater, killing the trees. Plus, 5 ghost forests in the U.S.

Elkmont Historic District in Great Smoky Mountains National Park was once a destination for wealthy vacationers. Now, its cottages stand in eerie disrepair.

The science behind why some cats hate belly rubs, plus what it means when a cat rolls over and shows you its belly.

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

From Saturn shining all month to Neptune at its brightest point all year, Mother Nature is bringing her own celestial fireworks to the party in the July sky.

Sweden has a floating library — the bokbåten — that brings thousands of books to people on dozens of remote islands in the Stockholm archipelago twice a year.

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.

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?

Like, why are there so many left-handed athletes, and how come they're so good at math?

Sand dollars are echinoids that live on the ocean floor. You may enjoy collecting their shells, but how much do you really know about these quiet creatures?

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.

How you train your dog can affect his happiness and stress levels long-term, study finds.

Puppies are born blind and mostly deaf, so they rely on you to meet all of their needs. From feeding to warmth, here's how to care for a newborn puppy.

Quilty the rescue cat will not be contained at the shelter.

So many animals don't have homes. Can you open up your home to one homeless animal, just for the holidays?

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.

Video from Dhaka, Bangladesh shows a young man climbing out to rescue a kitty stuck in a window.

If your favorite sport involves dog competitors, you are in for a treat on Thanksgiving Day when perfectly coiffed pooches representing 187 breeds and varieties

Injured military K-9 from ISIS raid visits the White House.

Find out which holiday theme was used by Jackie Kennedy, Barbara Bush and Hillary Clinton.

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

Fans at a Hershey Bears hockey game threw stuffed animals on the ice so they could be donated to charities.

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

Some animal advocates say don't give pets as gifts, but research shows it's not always a bad idea.

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.

You might hibernate when it snows, but your dog loves playing in a winter wonderland.

John and Charlotte Henderson are celebrating their 80th wedding anniversary this month at a nursing home in Texas.

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

A Rehoming Center in Ireland celebrates Christmas with adoptable dogs by allowing them to pick their own present from donated toys.

A cat rescued in North Carolina went viral because of her resemblance to Baby Yoda from 'The Mandalorian,' but there has been a strange turn of events.

Paying attention to a cat's tail language can give you insight into its mood and clue you in to what kind of behavior to expect.

Gyoza the pug was hired by 343 Industries to make alien sounds for the company's new Halo video game, "Halo Infinite."

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

Here's the reason why dogs have whiskers and whether you should ever trim them.

A hungry, stray dog nicknamed 'Subway Sally' is already an employee favorite at a New Mexico restaurant, but now she's a social media star, too.

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

A husky turned in by a breeder for her 'weird' eyes is adopted after a rescue group shares her story.

Some states have ditched the art of cursive writing so the teaching time can be used for other subjects, but it's making a comeback.

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

Perdita the cat has been dubbed the 'world's worst cat', but we know she's just misunderstood. And now, she's found her forever home.

Kansas City defensive tackle Derrick Nnadi celebrates team's Super Bowl win by paying adoption fees for pets at local shelter.

The Azawakh is a sight hound from West Africa that is newly recognized by the American Kennel Club.

You might be surprised by what the Best In Show winner is served for lunch.

This pesticide used in farming is linked to health issues in children.