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Animals

American South

The Best Places to See Wild Horses in North America

From Nevada to Nova Scotia, here are the top locations to see these beautiful and majestic creatures

This pig could be growing a heart or lungs for a transplant.

The Innovative Spirit

The Future of Animal-to-Human Organ Transplants

Could a genetically engineered pig heart one day function in a person?

It's OK, buddy. We're here to help.

New Research

Domestication Seems to Have Made Dogs a Bit Dim

Thanks to their relationship with us, dogs are less adept at solving tricky puzzles than their wolf relatives

Keepers weighed the panda cub Sept. 14, when Mei Xiang left her den. He weighed 1.9 pounds.

The National Zoo Wants Your Cutest Panda Cam Photos

Can’t get enough of the panda cam? You’re not alone.

Milk is udderly fascinating.

Seven of the Most Extreme Milks in the Animal Kingdom

A lactation expert breaks down why rhinos, rabbits and even pigeons produce their own special blends for babies

Cool Finds

Visit the Giant Galápagos Tortoises Using Google Street View

The 15-sided camera of the Street View Trekker followed migration routes for the giant reptiles

A leech found in Vietnam

New Research

These Scientists Survey Rainforest Diversity Using Leeches and the Blood They Suck

DNA from their host animals can persist in adult leeches for at least four months

Cool Finds

Meet the Bear Who Earned the Rank of Corporal in the Polish Army

He had a penchant for cigarettes, booze and arm wrestling

A rhinoceros in South Africa's Kruger National Park, where the Black Mambas anti-poaching task force protects animals.

Trending Today

These Women Reduced Poaching on one South African Reserve by 76 Percent

The “Black Mambas” just received a prestigious award for their work on behalf of rhinos, lions and cheetahs

A polar bear gnawing a caribou antler

New Research

Melting Ice Might not Spell Doom for Polar Bears

Snow geese, their eggs and caribou may offer enough calories for the polar bears to survive long ice-free seasons

A mother hummingbird in Arizona incubates her eggs under the indirect protection of her neighborhood hawk.

New Research

Hawks Act as Unwitting Muscle for Hummingbirds

In Arizona, hummingbirds seem to deliberately seek out bodyguard hawks to shield them from nest-robbing jays

New Research

Pigs Aren’t Quite as Domesticated as People Once Thought

Researchers partially unravel the complexity of domesticated swine genetics

Knut, the star of the Berlin Zoo, died due to swelling in his brain.

New Research

Knut the Polar Bear’s Mysterious Death Finally Solved

The famed Berlin Zoo bear suffered from an autoimmune disease that until now has only been known to occur in humans

The smallest cub, which weighed just 86 grams at birth, is seen here being hand-reared with bottle formula feedings.

Panda Update: Giant Panda Mom Mei Xiang Won’t Exchange Care of Cubs

Smaller cub is receiving infant formula and fluids from Zoo veterinarians

Screen grab from Panda Cam

BREAKING: A Panda Cub is Born at the National Zoo (Video)

The 17-year-old female giant panda Mei Xiang gives birth

Five pups from the Shasta Pack

Trending Today

Biologists Have Spotted the First Wolf Pack in California in 100 Years

Two adults and five pups make up the newly-named Shasta Pack

Ask Smithsonian

Ask Smithsonian: Why Do Flamingos Stand on One Leg?

Flamingos may be doing their one-legged tree pose to stay warm or just because it’s comfortable

Veterinarians detected what they believe is a developing giant panda fetus in an ultrasound procedure on giant panda Mei Xiang. Based on the size of the fetus, which is about four centimeters, officials say that Mei Xiang could give birth early next week, or possibly in early September.

Panda Cub (Or Is It Bamboo?) Detected in Mei Xiang’s Ultrasound

Breeding pandas is complicated and frustrating. The Zoo’s female Giant Panda has delivered two healthy cubs in the past ten years

"Flatties" might be more aptly nicknamed "fliers" for their ability to glide to safety should they lose their grip in tree canopies.

New Research

Gliding Spiders Found Falling From Tropical Trees

Flat-bodied spiders that live in the rainforest strike a Superman pose to take control of their free-falls

Female saiga at the Black Earth Nature Reserve in Russia in 2009

Trending Today

What Killed Over 134,000 Endangered Antelopes?

Experts are closer to an answer

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