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Reptiles

Coyotes and people coexist in San Francisco, despite an effort to eradicate the canines a century ago. This image and its portfolio won the Photojournalist Story Award.

See the Stunning Winners of the Wildlife Photographer of the Year Contest, Capturing the Splendor and Drama of Nature

These 19 recognized images highlight the diversity across our planet and the value in appreciating and protecting the natural world

Jonathan stands on the lawn of Plantation House, the governor's residence in Saint Helena. The Aldabra giant tortoise holds the world record for being the oldest living land animal.

Scientists Took a Cheek Swab From the World’s Oldest Tortoise. His DNA Could Reveal Hints to Longevity

Jonathan, an Aldabra giant tortoise, is about 194 years old and the oldest land animal alive today. Discoveries about his genetics could provide clues to extending lifespan in humans

Artist's impression of the new crocodilian species

A Century Ago, an Extinct Crocodilian’s Skull Was Found in the Rocks That Built the Sphinx. Turns Out, It Belonged to a New Species

The specimen was long mislabeled, according to a new study. Paleontologists identified it as a previously undescribed genus and species of gavial—a cousin of crocodiles and alligators—which they named after the ancient Egyptian god Horus

Tyrannosaurus rex’s image has seen major adjustments over the past century.

Five Discoveries That Changed Our Understanding of T. Rex Forever, From Warm Blood to Lips

Paleontologists are still unraveling the secrets of the world’s most famous dinosaur, such as its outward appearance or the way that it hunted. With each new finding, our view of the “tyrant lizard king” has gotten a little clearer—and sometimes has radically shifted

The rare two-headed turtle was found at a proteted nesting site.

Two Heads Are Better Than One: Rare, Double-Headed Turtle Hatchling Discovered on Cape Cod

The tiny diamondback terrapin was brought to a wildlife center on September 17. At the time, the creature weighed about as much as a nickel

Left: An olive ridley turtle nesting near the Huntington Beach Pier. Right: Eggs laid near Seal Beach. 

In a First, Sea Turtles Were Spotted Nesting on the U.S. West Coast. Scientists Say the ‘Super’ El Niño Could Have Brought Them There

Two olive ridley turtles were found laying eggs on beaches in Southern California in September. In the Pacific Ocean, these reptiles normally nest farther south, often in Mexico, Nicaragua, Costa Rica and Panama

In the new study, researchers analyzed fossilized teeth, including two from Thomas the T. rex.

Tyrannosaurus Rex Was a Warm-Blooded Dinosaur, With a Body Temperature Similar to That of Humans, Study Suggests

A tooth analysis hints that the fearsome predator ran at a toasty 97 degrees Fahrenheit. Maintaining that internal temperature may have allowed it to inhabit a range stretching from modern-day Alaska to Mexico during the Cretaceous period

The Earth in the Mesozoic Era, when dinosaurs roamed the planet, looked much unlike how it does today—even beyond presence of creatures like Giganotosaurus.

Five Ways the World of the Dinosaurs Looked Different From Ours, Beyond the Presence of the ‘Terrible Lizards’

Earth has changed dramatically since the Age of Dinosaurs, from its climate to geography and animal life

Elongated scales form leg-like structures at the tip of the spider-tailed horned viper's tail, creating a decoy arachnid that the predator can use to attract birds.

The Tip of This Snake’s Tail Looks Like a Spider. But Inside, Its Bones Are ‘Bizarrely Normal’

High-tech scans reveal the first detailed look at the internal anatomy of the spider-tailed horned viper. The findings shed light on little-known snake vertebrae and highlight the difficulty of predicting what an animal looks like from its skeleton

In loud conditions, a tokay gecko adjusts its call, which is typically used to find a mate or defend territory.

Reptiles Make a Surprising Amount of Noise. Here’s What Those Sounds Might Mean, From Pops to Hoots to Bellows

Scientists are realizing that turtles, lizards and crocodilians communicate vocally more than they once thought

This might be the view a seal gets as it comes up from underwater to breathe: a polar bear, looking down for its prey.

See 16 Stunning Animal Images From the Wildlife Photographer of the Year Awards

Now in its 62nd year, the famed competition has released a sneak peek of the entries from this contest ahead of announcing the winners in October

The team combined two operating tables to hold the snake's lengthy 110-pound body.

This 15-Foot Python Is the First Known Snake to Receive Electrochemotherapy for Cancer. Now, She’s Officially Free of the Disease

The pioneering treatment makes it easier for traditional chemotherapy drugs to penetrate cancer cells. After the procedure, the reptile, named Jodie Foster, made a speedy recovery

A koala, Phascolarctos cinereus, with her babies at Australia Zoo Wildlife Hospital, 2011

This Amazing Archive of Animal Photography Reveals 18,000 Species and Counting. Here’s How Joel Sartore Built His ‘Photo Ark’

For 20 years, the National Geographic photographer has showcased Earth’s animals in a series of striking images that make even the tiniest creatures look immense

This illustration shows an ichthyosaur biting a pterosaur, with a pliosaur preparing to attack from below.

Rare Fossil Reveals a Three-Tier Food Chain Frozen in Time: a Pterosaur Eaten by an Ichthyosaur Eaten by a Pliosaur

Uncovered in part by amateur fossil hunters in Australia, the fossil preserves a unique look at prehistoric predatory dynamics

The recently discovered ancient snake species probably burrowed underground, while another of a similar age likely lived on the surface.

How Did Some Reptiles Lose Their Limbs to Become Snakes? An 80-Million-Year-Old Fossil Helps Uncover the Winding Evolutionary History

Researchers have long suspected that the first of these slithering creatures lived in water, on land or underground. New research hints that more than one environment might be correct

Experts attached a satellite transmitter to Pancake's shell, which will track its location for up to 90 days.

Good News

An Endangered Kemp’s Ridley Sea Turtle Named Pancake Makes a Triumphant Return to the Ocean After Months of Rehabilitation

The cold-stunned turtle was rescued last fall on Cape Cod and has since made a full recovery. The reptile, whose sex remains unknown, is estimated to be between 2 and 5 years old and weighed 11 pounds at the time of release

A 52-foot-long model of a female Otodus megalodon is suspended from the ceiling at the Smithsonian National Museum of Natural History.

Predatory Sharks Grew to Enormous Sizes in Prehistoric Times. These Five Strategies Helped Them Get So Big

By cannibalizing their siblings in the womb or avoiding meat-eating pliosaurs, fearsome carnivores like the megalodon ballooned to proportions that would dwarf any shark alive today

Gripping onto the edge of an iceberg in East Greenland, a polar bear looks out across the sea ice and sniffs the air. “The scene reflects a landscape that never stays still, where ice fractures, drifts and reforms around it,” photographer Rhiannon Lawler of the United Kingdom writes in a caption. Lawler captured the photo with a drone, keeping a safe distance from the animal.

These 16 Splendid Aerial Views Capture Wildlife From Above, Revealing the Beauty and Mystery of Nature

The second International Aerial Photographer of the Year contest selected its winners and 101 top images. Here’s a selection of the photos that spotlight animals from a new perspective

The bone was collected in December 1985 by the late geologist Mike Thomson, who described it as a "vertebra of large reptile" in his field notebook.

A Fossil From Antarctica Sat in a Drawer for 40 Years. It Turned Out to Be the First Dinosaur Bone Ever Found on the Continent

After being forgotten for decades, the mysterious tail vertebra has finally been identified as part of a titanosaur. The discovery helps researchers understand how dinosaurs may have traversed Earth’s southernmost regions

Two fossils of juvenile embolomeres—crocodile-like creatures, illustrated here—suggest that they did not undergo metamorphosis to become adults and that the ancestors of today’s birds, mammals, reptiles and amphibians might not have had a tadpole life phase.

A Vietnam Veteran Collected Fossils for 66 Years. One, Mislabeled ‘Baby Lamprey,’ Made Paleontologists Reconsider How Vertebrates Moved From Water to Land

The fossil turned out to be a hatchling of a crocodile-like creature, and it suggests, according to a new study, that early animals did not use metamorphosis to evolve to dwell on land

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