National Zoo

Bei Bei noshes on some bamboo in his "Birthday Boy" box as spectators look on. His "cake," shaped like a numeral 2, is visible to his right.

Bei Bei the Panda Cub Celebrates his Second Birthday in Style

The notorious sleepyhead manages to rouse himself for fans

Moonlight's cub was born on June 17.

Meet the Zoo’s Newborn Red Panda Cubs, Who Just Opened Their Eyes

The three cubs were born within days of each other at the Smithsonian Conservation Biology Institute

A Smithsonian scientist and other researchers announce success in the first-ever cryo-preservation of zebrafish embryos using gold nanotechnology and lasers.

A Cool New Way to Freeze and Unfreeze Zebrafish Embryos Using Gold Nanotechnology and Lasers

The downstream applications could make food cheaper, repair coral reefs and help restore frog populations

Adorable New Tiger Cub Born at the Zoo Yips at Its Mom on Video

The new Sumatran tiger cub signals a success in efforts to save the critically endangered species

Bei Bai, July 28, 1916

Watch: The Panda Cub’s Favorite Game Is Belly Flopping Out of Trees

Bei Bei, the nearly two-year-old giant panda shows off his climbing—and falling—skills

“These males were still alive and living around the females, they just apparently weren’t getting any of the matings, or the matings weren’t working,” says Robert C. Fleischer.

Safer Digs for Tortoises Put a Damper on Their Love Lives

A new genetic study surprised scientists who learned the males were not breeding

Meet the Ozark hellbender, an elusive creature that has become only more so as of late.

What the Heck Is a Hellbender—And How Can We Make More of Them?

Why the Saint Louis Zoo decided to invest in this slimy, surprisingly adorable amphibian

A giraffe skin disease was first described in the mid-1990s in Uganda and evidence of the disease has been spotted in numerous other countries, including Namibia, Zimbabwe and Botswana.

How a Tiny Worm is Irritating the Most Majestic of Giraffes

They sound horrifying and look worse. A Smithsonian researcher is investigating the cause of these grotesque skin lesions

Scimitar-horned oryx calf

Spring Brings a Wave of Baby Animals to the Zoo

Seven different endangered species born so far at the National Zoo and the Smithsonian Conservation Biology Institute

Fruit bats are thought to be the natural host for the Ebola virus. Groups like USAID PREDICT regularly monitor such diseases in wildlife to prevent the jump from animal to humans.

Can Saving Animals Prevent the Next Deadly Pandemic?

A global disease monitoring network is banking on the idea that healthier wildlife means healthier humans

Two large litters of cheetah cubs were born at the National Zoo's Front Royal, Virginia, facility—the Smithsonian Conservation Biology Institute.

Two Litters of Adorable Cheetah Cubs Born in One Week

Smithsonian's cheetah conservation program welcomes the springtime births after careful planning

A rare Eld's deer fawn was born at the National Zoo last fall.

Take a Walk on the Bright Side at the First Smithsonian Earth Optimism Summit

As an antidote to doom and gloom, a conference on Earth Day weekend, takes a look all the good that is being done

Bao Bao's last day

Poignant Panda Moments in These Last Photos of Bao Bao

The National Zoo sends its much-loved giant panda home to China

How to FedEx a Giant Panda

On February 21, the United States says #ByeByeBaoBao

Think human dating is hard? Try being a panda.

Why Panda Sex Isn't Black and White

Reproductive experts weigh in on panda porn, panda Viagra and other biological myths

On October 8, 2013, panda cub Bao Bao is examined by Zoo staff Juan Rodriguez and Brandie Smith.

It’s Easy to Fall in Love With a Panda. But Do They Love Us Back?

Keepers admire them, but have no illusions. Pandas are solitary creatures

The Zoo's female bobcat was found on the property of the Zoo.

Ollie the Bobcat Is Back at the Zoo and Off the Streets of Washington, D.C.

National Zoo bobcat ends her city sojourn

“No, we don't cuddle the seals,” says the Zoo's Rebecca Sturniolo says. “As cute and cuddly as they are, they are pretty feisty."

The Zoo's Baby Seal Is Cute and Cuddly, But Don't Be Fooled

The National Zoo's seal-breeding program has another gray seal pup success

Bei Bei, the National Zoo's youngest giant panda cub, during a veterinary exam when he was less than three months old.

The Long, Adorable History of Pandas in America

Su Lin was the first giant panda to come to America, landing in San Francisco in 1936

The first episode, “Tech Yourself,” explores how the ascent of the railroad industry pushed America into creating time zones.

There’s a “Sidedoor” Entrance to the Smithsonian and It’s Through a New Podcast

Sidedoor will air eight episodes in its first season; new episodes will debut every two weeks

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