Animals

The first two cheetah cubs born via embryo transfer

In a First, Cheetah Cubs Born Through Surrogacy at the Columbus Zoo

Zookeepers and Smithsonian scientists successfully transferred cheetah embryos, marking a major conservation milestone for the vulnerable species

Photographers gather at the eastern edge of El Capitan in February, eager to capture Yosemite's "firefall."

Nine Rare Natural Phenomena Worth Traveling For

You have to be in the right place at the right time to see these awe-inspiring events

Olms, also called "baby dragons" and "human fish," are blind, foot-long salamanders native to European caves.

A Cave-Dwelling Salamander Didn't Move for Seven Years

The blind, eel-like amphibians called olms live deep in European caves and can go years without food

Most cat allergies are caused by a protein called Fel d 1 that's found in cat saliva and skin glands, and often gets wicked into fur.

What Does a Study of Slow Lorises Actually Say About Cat Allergies?

An unusual theory ultimately warrants skepticism under further research is conducted

A cat-eyed snake eats a toad in Panama. Many snakes depend on amphibians and their eggs for nutrition.

Tropical Snakes Suffer as a Fungus Kills the Frogs They Prey On

Surveys of reptiles in central Panama show the ripple effects of an ecological crisis

Two giraffes

Fourteen Fun Facts About Love and Sex in the Animal Kingdom

Out in the wild, flowers and candy just aren’t gonna cut it

This is a graphic reconstruction of a male Stupendemys geographicus swimming in freshwater.

Gigantic Turtles Fought Epic Battles 10 Million Years Ago—and Have the Scars to Prove It

Their shells were 10 feet wide and equipped with foot-long horns on both shoulders

At Pablo Escobar's former hacienda, tourists are warned about the dangerous presence of an expanding hippo population.

Pablo Escobar's Pooping Hippos Are Polluting Colombia's Lakes

A new study suggests the hulking creatures are changing local water bodies with their bathroom habits

Inspector Clouseau, the world's only known pink manta ray

Rare Pink Manta Ray Spotted Near Australia’s Lady Elliot Island

Researchers suspect a genetic mutation may have gifted the giant fish, named Inspector Clouseau, his rosy hue

Station Squabble by Sam Rowley

See Squabbling Subway Mice and Other Top Wildlife Photos

The Natural History Museum in London has announced the top five honorees in its LUMIX People’s Choice Award competition

Numbers of these charismatic, blubbery birds have decreased by about half across Antarctica's northwest.

Preliminary Census Documents Antarctica’s Chinstrap Penguins in Sharp Decline

Climate change is the likeliest culprit, researchers say

Washington, who tended to favor surprisingly silly names for his animals—his dogs answered to Sweetlips, Drunkard and Madame Moose—went literal when it came to the mule, who he called Royal Gift.

George Washington Saw a Future for America: Mules

A newly minted celebrity to the world, the future president used his position to procure his preferred beast of burden from the king of Spain

The NIH, FDA, and VA have policies encouraging labs that conduct animal research to find adopters for healthy animals at the end of studies.

The F.D.A. Will Now Allow Lab Animals to Be Adopted

F.D.A. joins the National Institutes of Health and the Department of Veteran Affairs in adopting a lab animal retirement policy

The blue-throated barbet, illustrated here in 1871, is native to southern Asia.

You Can Now Download 150,000 Free Illustrations of the Natural World

The artworks, collected by the open-access Biodiversity Heritage Library, range from animal sketches to historical diagrams and botanical studies

Jackass penguin calls don't sound like human words. But the two forms of communications follow the same linguistic laws.

Jackass Penguin Calls Follow Similar Rules to Human Speech

These birds are nicknamed for donkeys, but structure their calls like words

Grey seals will clap their forelimbs together underwater, generating a sharp sound that communicates to others around them.

In a First, Scientists Film Wild Grey Seals Clapping to Show Their Strength

The behavior is believed to scare off competitors while wooing potential mates

The red-breasted nuthatch eavesdrops on chickadee conversations to get advanced notice of predators like pygmy owls.

Nuthatches Heed Chickadees' Warning Calls—but They're Wary of False Alarms

Nuthatches prefer to check the facts before they 'retweet' chickadees' alerts

Axolotls can regrow lost limbs, again and again, making them appealing to scientists who want to understand regeneration.

Some Salamanders Can Regrow Lost Body Parts. Could Humans One Day Do the Same?

In recent decades, the idea of human regeneration has evolved from an 'if' to a 'when'

This deer mouse certainly looks pretty stressed and scared.

When Stressed Out, Mice’s Fur Turns Gray Quickly

A new study gives scientific backing to an old adage—and suggests that stress might affect the human body in dramatic ways

The Cape coral snake is a venomous species that lives in arid regions of southern Africa.

The Future of Antivenom May Involve Mini Lab-Grown Snake Glands

The antiquated technique used to produce antivenom requires injecting venom into horses and this new method may someday remove that step from the process

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