A female megalodon model, based on a set of teeth discovered in the Bone Valley Formation in Florida, hangs in The Smithsonian National Museum of Natural History.

How Cannibalism in the Womb May Have Made Megalodon a Titanic Terror

A new analysis of shark body size offers clues as to why the 50-foot-long prehistoric shark grew so large

The Yonahlossee salamander is a woodland species from the southern Appalachian Mountains in the United States

Smithsonian Voices

Here’s How You Can Help Amphibians in the Fight Against Extinction

We now know that the killer chytrid fungus originated in Asia and that humans unintentionally spread it around the world

A great spotted woodpecker eats a hazelnut. Bird beaks may have allowed the animals to eat seeds and nuts after an asteroid hit the earth, wiping out many forms of life.

Why Birds Survived, and Dinosaurs Went Extinct, After an Asteroid Hit Earth

Paleontologists think that beaks may have given birds an advantage over other creatures

A photo of a highland wild dog in Papua, Indonesia. A new genetic study confirms that these wild dogs are in fact a surviving population of the New Guinea singing dog, which was thought to be extinct in the wild.

New Research

Thought to Be Extinct, New Guinea’s Singing Dogs Found Alive in the Wild

A new genetic study confirms that the unique dogs, thought to be extinct in the wild, still exist outside of human care

An artist's rendering of the 250-million-year-old animal Lystrosaurus in a hibernation-like state.

Hibernation May Be a 250-Million-Year-Old Survival Trick

Paleontologists studying this strange creature’s tusks say they’ve found evidence the animal slowed its metabolism during hard times

The stomach of a 15-foot fossil ichthyosaur excavated in China contained this massive chunk of another large marine reptile. The ichthyosaur swallowed its prey shortly before it died and was fossilized.

This 15-Foot Ichthyosaur Died With a 13-Foot Meal in Its Stomach

The shocking size of the marine predator’s quarry may force paleontologists to rethink the marine reptile’s role in the Triassic ecosystem

New research suggests painting eyes on cattle behinds can help protect them from predators.

New Research

Painting Eyes on Cow Butts Could Save Cattle and Lion Lives

The four-year study in Botswana found cattle with eye marks painted on their behinds were less likely to be killed by predators

An illustration of the 30-foot-long, dinosaur eating crocodilian Deinosuchus.

30-Foot ‘Terror Crocodile’ Ambushed Dinosaurs at Water’s Edge

Study says the five-ton extinct reptiles had teeth the size of bananas

A lifelike restoration using the remains of a baby woolly rhinoceros recovered from the Siberian permafrost. The specimen was nicknamed Sasha after the hunter who discovered it.

Climate Change, Not Hunting, May Have Doomed the Woolly Rhinoceros

Populations of the Ice Age icon were healthy right up until their extinction, suggesting they crashed precipitously as the planet warmed

An artist's illustration of the Triassic reptile Tanystropheus hydroides hunting with its long neck.

Study Reveals This Mysterious, Super Long-Necked Triassic Reptile Was a Marine Hunter

The creature’s neck was stiff like a giraffe’s and was nearly three times the length of its torso

A 99-million-year-old piece of amber trapped this worker hell ant grasping an ancient relative of modern cockroaches in its unique jaws, which swung upwards unlike all modern ants.

New Research

Amber Fossil Shows ‘Hell Ant’ Was Unlike Anything Alive Today

The 99-million-year-old ant had scythe-like jaws that swung upward to pin prey against a horn-like head appendage

Side-by-side renderings of the marsupial saber-tooth Thylacosmilus atrox (left) and the saber-tooth cat Smilodon fatalis (right).

New Research

This Marsupial Sabertooth Was No Killer Cat

Long fangs caused many to assume Thylacosmilus was a slashing predator, but new research suggests it was a scavenger with a preference for leftovers

On the shores of Pechevalavato Lake in Russia's Yamalo-Nenets region, people dig for more pieces of a mammoth skeleton first found by reindeer herders.

Cool Finds

Woolly Mammoth Skeleton With Intact Ligaments Found in Siberian Lake

Part of the extinct animal’s foot was recovered from the water with well-preserved, millennia-old soft tissue

A white tip reef shark swims above the reef near the Gambier Islands, French Polynesia in 2018

Reef Sharks Are in Serious Danger of Extinction

Researchers found that the sharks are ‘functionally extinct’ in 20 percent of coral reefs surveyed

A North Atlantic right whale off the coast of Cape Cod in 2015

North Atlantic Right Whales Now Listed as ‘Critically Endangered’

Just about 400 of the whales survive in the wild, and they continue to die at an alarming rate

There are only around 80 Sumatran rhinos (Dicerorhinus sumatrensis) left on Earth. In their native northern Sumatra, Indonesia, they are being pushed towards extinction by habitat loss and poaching.

Already Unprecedented Rate of Wildlife Extinctions Is Accelerating

New research suggests roughly 500 species are likely to go extinct in the next two decades

Shot in 1935, this is a still from a newly rediscovered bit of footage depicting Benjamin, the last captive thylacine on Earth. He was on display at the Beaumaris Zoo in Hobart, Tasmania.

‘New’ Footage of Benjamin, the Last Tasmanian Tiger Ever Seen Alive

The short video hasn’t been seen in more than 80 years and shows the animal pacing its enclosure in Hobart, Tasmania

Silver Y Moth (Autographa gamma), feeding on fuchsia flowers at night in a garden.

New Research

Moths Work the Pollination Night Shift, Visiting Some Flowers Bees Skip

A new study highlights the importance of moths as nocturnal pollinators in the English countryside

A new analysis of insect abundance surveys finds the decline may not be as dire as previously thought.

New Research

New Study Gives a More Complex Picture of Insect Declines

The researchers gathered data from 166 surveys of insect abundance around the world, mostly conducted since the 1980s

Artist's impression of the Chicxulub impact.

After the Dinosaur-Killing Impact, Soot Played a Remarkable Role in Extinction

The famous impact 66 million years ago kicked up soot into the atmosphere that played an even bigger role in blocking sunlight than experts had realized

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