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Animals

Northern snakeheads were first discovered in American waters in 2002.

These Large, Snake-Like Fish Are Invading the United States—and Authorities Want You to Kill Them

Invasive northern snakeheads can “walk” on land, breathe air and survive out of water for several days, and they also compete with native species in waterways

Young Lion Resting, Rembrandt van Rijn, circa 1638-42

Rembrandt’s Stunning Sketch of a Lion Will Be Sold at Auction to Fund Wildlife Conservation Efforts

“Young Lion Resting” is among dozens of Dutch Golden Age artworks from the Leiden Collection that are now on view at the H’ART Museum in Amsterdam

Researchers suggest fire-footed rope squirrels might be a "reservoir species" for mpox, capable of harboring and spreading the virus without becoming sick. Here, one is photographed in Kibale National Park, Uganda.

Squirrels, Not Monkeys, May Be the Animal Source of Mpox, Researchers Suggest

A preliminary study traces an mpox outbreak in a group of Ivory Coast monkeys to the fire-footed squirrel, indicating the rodent may be a natural reservoir for the virus

A Schaus’ swallowtail (Papilio aristodemus) rests on a plant.

Why Does This Endangered Butterfly Thrive After Hurricanes?

For Schaus’ swallowtail butterflies, the powerful storms mean clear skies and bright futures

Last year, nine million viewers tuned in to watch “The Great Moose Migration” in Sweden.

Watch Majestic Moose Meander North With This Popular Live Stream From Sweden

“The Great Moose Migration” shows the antler-adorned ungulates making their annual spring trek

Caught on Lake Livingston near Houston using a two-pound line, the massive alligator gar weighed 153 pounds.

Angler Catches 153-Pound Behemoth in Texas Using Ultra-Light Tackle, Likely Setting a New World Record

Art Weston and Kirk Kirkland reeled in and released the enormous freshwater fish, known as an alligator gar, after a four-hour battle on Lake Livingston

Elephants at the San Diego Zoo Safari Park huddled together, facing outward, in a behavior called an "alert circle" after an earthquake hit.

Watch These Elephants Form an ‘Alert Circle’ as an Earthquake Shakes San Diego, Protecting Their Young at the Center

Footage from the San Diego Zoo Safari Park shows the large mammals huddling together around the herd’s calves

Fossils indicate a variety of marine reptiles swam through ancient seas.

From Massive Eyes to Shark-Like Tails, Seven Amazing Adaptations That Helped Prehistoric Reptiles Thrive at Sea

The creatures cruised the world’s oceans with features we often associate with marine mammals, such as coats of blubber and the ability to birth live young

Researchers recently captured the first-ever confirmed video of the colossal squid in its natural habitat.

Check Out the First Confirmed Footage of the Colossal Squid, a Rare and Enigmatic Deep-Sea Species

Most of what we know about the elusive creature comes from research on its remains found in whale stomachs, but scientists just filmed a one-foot-long juvenile in the South Atlantic Ocean

Researchers Daniel Cerveny and Marcus Michelangeli collecting salmon from the Dal River in Sweden.

Salmon Are Being Exposed to Our Anti-Anxiety Medication, and It’s Making Them Take More Risks, Study Suggests

Atlantic salmon exposed to a common anti-anxiety drug migrate faster, according to new research. That’s not necessarily a good thing

Ronin the African giant pouched rat is one of more than 100 rats trained by a Belgian nonprofit to sniff out deadly land mines.

Super-Sniffing Rat Sets a New World Record for Discovering Deadly Land Mines—and He’s Just Getting Started

Ronin, a 5-year-old African giant pouched rat, has found 109 land mines and 15 other unexploded ordnances in Cambodia

An adult male Hudsonian godwit perches in a white spruce tree in Churchill, Manitoba.

Inside the Epic Migrations of North America’s Most Fascinating Shorebirds, From Godwits to Curlews

Ornithologist Bruce Beehler tracks down what he calls the “Magnificent Seven,” a charismatic group of migratory birds, in his new book

An Aldabra giant tortoise stands tall. Males can weigh more than 500 pounds.

Thousands of Giant Tortoises Anchor a Thriving Ecosystem on Aldabra, a Remote Atoll in the Indian Ocean

The animals graze the vegetation into a picturesque turf, fertilize the soil with their dung and disperse seeds over large distances

Carrion crows (Corvus corone) can tell the difference between geometric shapes, according to new research.

Crows May Grasp Basic Geometry: Study Finds the Brainy Birds Can Tell the Difference Between Shapes

Scientists tested crows on their ability to recognize “geometric regularity,” a skill previously assumed to be unique to humans

Brown-headed cowbirds perch together on a branch in southern Arizona. The species is a brood parasite, sneaking their eggs into other birds’ nests in an attempt to steal parental care.

A Revealing Look Into the Surprisingly Tricky Sex Lives of Birds

Even among the most durable migratory bird pairings, sexual exclusivity is rarely part of their relationship

A subset of more than 1,000 neurons, representing just a snapshot of the complexity mapped within a cubic millimeter of mouse brain tissue

In a World First, Researchers Mapped Part of a Mouse’s Brain in Incredible Detail. It’s a Leap Forward for Neuroscience

The 3D brain map includes more than 200,000 cells, 523 million synapses and over two miles of axons, representing the most detailed wiring diagram of a piece of mammal brain ever constructed

Kipi, the 4-year-old female reticulated giraffe, stands roughly 12 feet tall. Her calf is roughly 6 feet tall.

No One Knew This Giraffe Was Pregnant—Until She Suddenly Gave Birth to a Healthy Baby Girl

Kipi, a 4-year-old reticulated giraffe and first-time mother, had only been at the Maryland Zoo for a few months when she surprised caretakers with her pregnancy

Researchers investigated 12th- and 13th-century manuscripts from an abbey in France that were clad in furry outer covers.

Some ‘Hairy’ Medieval Books Were Covered in Sealskin, and Researchers Don’t Know Exactly Why

Historians were surprised when analyses revealed Catholic monks used pinniped hides for the protective outer layer on some manuscripts, rather than skins from the local boars and deer

A species of remipede known from the Caicos Islands. The photograph was taken by a member of a multinational team looking for rare species. Remipedes are crustaceans that are close relatives to insects.

You Might Think of Shrimp as Bugs of the Sea. But a Remarkable Discovery Shows the Opposite: Bugs Are Actually Shrimp of the Land

A recent study suggests that insects branched out from crustaceans on the tree of life

The goose briefly made a nest in a juniper planter next to the center-field seats in Wrigley Field's bleachers.

Meet the Chicago Cubs’ Newest Feathered Fan: a Canada Goose That Built Her Nest in Their Baseball Stadium

After the ballpark sent a crew of “geesekeepers” to protect her over the weekend, the bird appears to have moved on. But she earned a place in the hearts of Cubs fans—and in the team’s long history of animal-related lore

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