Animals

The cat-eyed snake slithers in the Peruvian Amazon.

A Serpentine 'Explosion' 125 Million Years Ago Primed Snakes for Rapid, Diverse Evolution

Researchers say an evolutionary "singularity" led to several small, quick changes in snake species, from legless bodies and flexible skulls to chemical-sensing abilities

Want to know what a sand tiger shark has been eating? Look to its teeth.

What Centuries-Old Shark Teeth Reveal About Brazil's Ocean

Researchers examined the remnants of a 13th-century fishing site to get a picture of how the marine ecosystem has changed

A Brazilian flea toad sits on a Brazilian real. The coin is 27 millimeters across.

The World's Smallest Vertebrate Is a Tiny Brazilian Frog, Study Finds

Adult male Brazilian flea toads are just over 7 millimeters long on average, and females measure about 8.15 millimeters

Weliton Menário Costa dances in "Kangaroo Time," his winning music video about kangaroo behavior research.

Watch This Year's 'Dance Your PhD' Contest Winner, a Musical Celebration of Kangaroo Behavior

“Kangaroo Time” took home the competition’s overall prize, while interpretive dances on early life adversity, circadian rhythms and streambank erosion were also honored

Because the fish are translucent and they lack skulls, they're a favorite research subject of neuroscientists.

This Tiny Fish Can Make Sounds That Rival an Airplane or an Elephant—Now, Scientists Know How

Transparent and just half an inch long, male Danionella cerebrum can make noises of more than 140 decibels

An adult humpback whale and calf. In the new study, the researchers blew air into the larynxes of three deceased whales, including a humpback, to learn how the the organ makes sound.

Scientists Discover How Some Whales Can Sing While Holding Their Breath Underwater

Baleen whales have evolved unique voice boxes essential for song, a new study finds—but these low-frequency vocalizations must compete with the noise of humans' ships

Joro spiders aren't particularly bothered by the vibrations of a busy city environment.

Joro Spiders, Spreading in the Southeast, Can Survive Surprisingly Well in Cities

Unlike most spiders, the hustle and bustle of urban areas doesn’t seem to disturb the non-native Joros, a new study finds

Flaco, a Eurasian eagle-owl, sits in a tree in Central Park. The bird roosted and hunted in the park during the year following his escape, becoming popular with local birders, before his death on February 23.

Flaco, the Famous Owl That Escaped the Central Park Zoo, Dies After Hitting a Building

The Eurasian eagle-owl had been living free in New York City after someone cut the wires on his zoo cage last year

Mei Xiang and Tian Tian are two of the giant pandas who lived at the Smithsonian's National Zoo and Conservation Biology Institute in recent years. They were returned to China in November 2023.

More Giant Pandas Are Coming to the U.S. in a New Loan From China

China plans to send a male and a female panda to the San Diego Zoo as early as this summer, and negotiations are underway for pandas' possible return to the National Zoo in Washington, D.C.

Northern gannets plunge into the water to hunt in Shetland. This image won the British Waters Wide Angle category.

See 15 Otherworldly Images From the Underwater Photographer of the Year Awards

A hunting monkey, 'kissing' scorpionfish and playful dolphins feature in just a few of the 130 striking photographs distinguished with honors in the competition

Hunters, trappers and other land users in the North are using Siku, a mobile app named after the Inuktitut word for “sea ice,” to share environmental information, including ice conditions. Here, an Inuit hunter prepares to test the safety of sea ice near Sanikiluaq, Nunavut, with a harpoon.

This App Lets Inuit Combine Traditional Knowledge With Scientific Data

Indigenous communities from Alaska to Greenland are harnessing information to make their own decisions

A single locust swarm can comprise between four billion and eight billion individual insects.

Giant Locust Swarms Could Expand to New Areas With Climate Change, Study Suggests

In the coming decades, erratic periods of rain and drought could create new hot spots for the ravenous grasshoppers in west India and west central Asia, threatening crops and food security

The world's oldest living wild platypus (not pictured) is nearly 24 years old.

The World's Oldest Wild Platypus Shocks Scientists at 24 Years of Age

The animal was tagged in 2000, when it was estimated to be about one year old, and re-discovered alive in the wild last year

Charlotte, a round stingray, was determined to be pregnant, despite not having a male ray companion for at least eight years.

A Female Stingray That Hasn't Had a Mate in Eight Years Is Mysteriously Pregnant. Is a Shark the Father?

Though the round stingray, named Charlotte, shares her aquarium tank with two male sharks, experts say it is impossible for a shark to impregnate a ray

While the egg was found during excavations in 2010, researchers learned only recently that it still contains liquid.

Archaeologists Were 'Amazed' to Find That a 1,700-Year-Old Chicken Egg Still Has Liquid Inside

Discovered in England, the egg is thought to be the only one of its kind—and analysis of its contents could shed new light on its origins

In a study of great apes' playful antics, chimpanzees seemed to enjoy slapping adults, especially those that were dozing off.

Great Apes Love to Tease, Poke and Pester, Suggesting the Urge to Annoy Is Millions of Years Old

The desire to get a rise out of others is a 13-million-year-old trait humans and great apes share with a common ancestor, new research suggests

The remains of a dog buried next to a baby

These Ancient Celts Were Buried With Their Animals

Some remains found in the 2,000-year-old graves were likely food offerings, but others may have been much-loved companions

A mother humpback whale and calf are seen off the coast of Brazil.

Earth’s Migratory Animals Are in Peril, According to U.N. Report

The Convention on Migratory Species warns that many birds, mammals and fish face numerous threats, but they can be saved

In a photo illustration, a hawk moth lands on a flower with an exhaust pipe polluting the interaction.

Air Pollution Makes Flowers Smell Less Appealing to Pollinators, Study Suggests

Nocturnal hawk moths are less likely to visit primroses in air polluted by nitrate radicals, which break down important wild fragrances, researchers find

An artist’s illustration of Glikmanius careforum swimming beneath Troglocladodus trimblei in ancient waters.

Paleontologists Discover Two New Shark Species From Fossils in Mammoth Cave National Park

The "active predators" prowled the oceans more than 325 million years ago, before the time of Pangea

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