Animals

This is the 93-year-old Xerces blue butterfly specimen that researchers collected tissue samples from for this study.

This Butterfly Is the First U.S. Insect to Be Wiped Out by Humans

Genetic tests using museum specimens suggest that the Xerces blue was a distinct species and that it disappeared in 1941

An opah or moonfish that washed up on Sunset Beach in northern Oregon on July 14.

Brightly Colored, 100-Pound Moonfish Washes Up on Oregon Beach

Scientists say this open-ocean species, also known as an opah, typically inhabits warmer waters than those of the Pacific Northwest

Officers Paul Douglas (left) and Theodore Santos (right) stand with their newest Covid-19 K9 unit: a female black lab named Huntah (left) and a male golden lab-retriever mix, Duke (right).

Massachusetts Becomes First U.S. State to Enlist Covid-Sniffing Canines

Duke and Huntah are first dogs used by law enforcement to detect coronavirus cases

The fuzz of the fingernail-sized rosy maple moth may remind you of a teddy bear.

These Moths Are So Gorgeous They 'Put Butterflies to Shame'

To celebrate National Moth Week, bask in the beautiful variety of these oft-overlooked insects

A dwarf cow named Rani stands next to a more normal sized cow on a farm in Bangladesh.

This 20-Inch-Tall Cow Could Be the World's Smallest Ever

Meet Rani, a pint-size bovine in Bangladesh, who has drawn thousands of adoring fans to her farm

Rembrandt created this sketch of Hansken, an Asian elephant brought to Europe from Sri Lanka, in 1637.

The Tragic Life of Hansken, 'Rembrandt's Elephant'

A new show at the Rembrandt House Museum in Amsterdam explores the story of an animal who fascinated the Dutch artist

Maui's Haleakala is the world's largest dormant volcano, and its summit is considered the quietest place on Earth.

Ridiculous Reviews of Some of the Best National Parks

A new book combines illustrations of the parks with laughably bad critiques from disgruntled tourists

There's more to a flamingo than its bright pink feathers.

10 Things You Didn't Know About Flamingos

There's more to these birds than their bright pink feathers; get to know these delightfully unusual creatures

Good dogs often gets treats as rewards. A new experiment shows that dogs who get fed, when given the chance to reciprocate, usually won’t pay their owners back with food.

New Study Shows Dogs Don't Return the Favor After Strangers Feed Them

A new lab experiment reveals pooches don’t pay humans back with a treat after the canines are fed

A 2018 estimate suggests 50 million giant goldfish may swim in Lake Ontario.

Nearly 30 Football-Sized Goldfish Caught in Minnesota Lake

When tiny fish are released in large bodies of water, they can grow to prodigious sizes, officials warn

Southern giant petrels have so far killed nearly 100 Atlantic yellow-nosed albatrosses on Gough Island in the South Atlantic.

Giant New Predators Killing Imperiled Albatrosses

Videos show southern giant petrels killing Gough Island’s beautiful endangered seabirds

The ancient mammal Gobioconodon (right) squabbles with a therian mammal over a meal in the Late Cretaceous.

Other Mammals, Not Dinosaurs, Kept Our Ancestors Down

The asteroid impact that ended the Cretaceous gave our mammalian ancestors, the therians, an edge over their mammalian competitors

New research finds that sea otters have extremely high metabolisms for their size to keep warm in the cold ocean waters they inhabit.

With This Metabolic Trick, Sea Otters Stay Warm Without Shivering

Researchers find that the metabolisms of these marine mammals go into overdrive to create heat in cool waters

A seabird known as the white tern or Manu-o-Kū has surprised birders by taking up residence in Honolulu, Hawai‘i.

Meet the White Tern, a Seabird Surprisingly Thriving in a Big City

The bird—also known as Manu-o-Kū—has excited ornithologists, its population growing within Honolulu, the busiest of Hawai'i's urban landscapes

A black widow spider hangs from its web.

Eight Fun Facts About Black Widows

The venomous spiders are nimble, secretive and dangerous

Scientists reconstructed a new beetle species in 3-D thanks to X-ray scans of fossilized poop.

New Species of Beetle Found in 230-Million-Year-Old Feces

The insect is older than any amber-encased specimen, and may inspire scientists to look for more insects in fossilized dung

Fire ant swarms form tentacles when they float on water.

Floating Fire Ant Rafts Form Mesmerizing Amoeba-Like Shapes

Researchers say the morphing colonies help ants feel for solid land in a flooded environment—and might inspire swarming robots one day

The tyrannosaur Nanuqsaurus with its young

Dinosaurs Nested in the High Arctic

Tiny fossils of polar dinosaurs suggest that the reptiles stayed year-round

Townsend captured the Oregon dark-eyed junco, above, and the Townsend’s warbler, below, named after him—for now.

Birds Collected Nearly Two Centuries Ago Still Help Scientists Today

The specimens gathered during an illustrious expedition by naturalist John Kirk Townsend continue to provide value to researchers

Western lowland gorilla Moke eating a snack

The Science Behind the Snacks Animals Eat

Meals to please the palates of giant pandas, flamingos and fishing cats

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