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Reptiles

Some sebecids grew to lengths of 20 feet.

After Crocs and Lemurs Went Extinct on the Mainland, Many Survived on Islands for Millions of Years

Isolation allows creatures to thrive as their relatives perish due to the threats present on much larger landmasses

Bolg amondol raids an oviraptorosaur dinosaur nest in an artistic reconstruction of how the species may have looked and behaved.

A Jar of Fossil Bones Long Stored at a Museum Led Scientists to Discover a Goblin-Like Lizard From 76 Million Years Ago

Fossils described in a new study speak to a previously unknown large-bodied lizard diversity that existed alongside dinosaurs

Hikers spotted the creature at the 10,882-acre Joseph D. Grant County Park last week.

A Large, Invasive Lizard Was Spotted in a California Park

Hikers at Joseph D. Grant County Park, just outside of San Jose, saw an Argentine black and white tegu last week—and rangers are now searching for the out-of-place reptile

Burmese pythons—like this one photographed at Everglades National Park—are decimating animal populations in South Florida.

Florida Bobcat Kills 13-Foot Python for the First Time on Record. It’s a Sign of Nature ‘Fighting Back’ Against the Invasive Snakes

Burmese pythons are wreaking havoc on the Everglades ecosystem, but some native animals have been known to prey on the enormous reptiles

Amateur fossil hunters discovered a trackway left by a creature that might have looked like the one in this illustration. The finding raises new questions about the evolution of the earliest reptiles.

Fossil Hunters Discover Earliest Known Footprints of a Reptile-Like Creature, Pushing Back the Timeline of Their Evolution

A new study suggests two fossil trackways found in Australia were made by an early amniote, a group that today includes reptiles, birds and mammals

The healthy adult female was covered in curvy circles, similar to leopard spots.

This Eye-Catching Rattlesnake Found in Arizona Has Unusual ‘Leopard Spots,’ Likely From a Genetic Mutation

Snake wranglers safely relocated the healthy, female western diamondback from a backyard in Scottsdale, but they say the find is a first in their experience

The Chicago Archaeopteryx, seen under UV light, shows soft tissues alongside the skeleton.

The Famous, Feathered Dinosaur Archaeopteryx Could Fly, Suggests New Study of a ‘Beautifully Preserved’ Fossil

The Chicago Archaeopteryx features more soft tissue and delicate skeletal details than any known fossil of its kind, and paleontologists discovered it has a set of feathers key to flight in modern birds

The king cobra (Ophiophagus hannah) is the world's longest venomous snake, and it's one of the species that can be neutralized with a new antivenom.

200 Snakebites Later, One Man’s Blood May Hold the Key to a Universal Antivenom

Over two decades, Tim Friede has injected himself with snake venom hundreds of times, and subjected himself to more than 200 bites. Now, scientists are working on an antivenom derived from his antibodies

Crocodile-like sebecids were known to roam South America after dinosaurs went extinct. Recently found fossils suggest they inhabited the Caribbean as well—and thrived there long after they disappeared on the continent.

Fossils Reveal Enormous, Crocodile-Like Reptiles Survived for Millions of Years Longer Than Previously Thought

New discoveries in the Dominican Republic suggest sebecids roamed the Caribbean as recently as 4.5 million years ago, long after they vanished from South America

Researchers took a closer look at fossilized footprints—including these cat-like tracks—found at John Day Fossil Beds National Monument in Oregon.

50-Million-Year-Old Footprints Open a ‘Rare Window’ Into the Behaviors of Extinct Animals That Once Roamed in Oregon

Scientists revisited tracks made by a shorebird, a lizard, a cat-like predator and some sort of large herbivore at what is now John Day Fossil Beds National Monument

An artist's impression of the Late Cretaceous crocodilian Deinosuchus riograndensis and a much smaller, early alligator relative.

The Ancient ‘Terror Crocodiles’ of North America Weren’t Alligators After All, DNA and Fossils Suggest

A new study indicates the giant reptile Deinosuchus is not a close relative of modern alligators, as scientists previously thought, and it might have thrived by tolerating saltwater

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

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

Gopher tortoises are disappearing from Florida, primarily because of habitat destruction that's often tied to residential development.

A Hurricane Swept These Tortoises Across Miles of Ocean to a New Home in Florida—and Now, They’re Thriving

Park rangers say at least 84 gopher tortoises are now living at Fort de Soto Park near St. Petersburg. Prior to Hurricane Helene in September, the local population was around eight

The four hatchlings are eating and putting on weight before their public debut on April 23. Their clutch included 12 other eggs, which have yet to hatch.

At 97, Endangered Tortoise Becomes Oldest First-Time Mom of Her Species With Four New Hatchlings—and Potentially More on the Way

Proud parents Mommy and Abrazzo are both nearly 100 years old, but they’re contributing to Galápagos tortoise conservation at Philadelphia Zoo

A male central Fijian banded iguana from Ovalau Island, Fiji.

Iguanas Floated a Whopping 5,000 Miles From North America to Fiji on Rafts of Plants in a Record-Setting Trip, Study Suggests

Since most iguana species live in the Americas, biologists have long debated how they could have arrived on the remote Pacific island in the first place

A hatchling Kemp's ridley sea turtle

Inside the Herculean Effort to Study and Save the World’s Smallest Sea Turtle

After years of steady gains, a decades-long conservation program dedicated to the Kemp’s ridley hits rough seas

Nutria have voracious appetites for vegetation, leading them to destroy wetland ecosystems.

The U.S. Fish and Wildlife Service Wants You to Eat These Giant, Invasive Rodents

As part of National Invasive Species Week, the agency is calling on Americans to “eat the invaders,” including swamp-dwelling nutria

A crocodile wears a satellite tracker in Queensland, Australia. Scientists monitored the reptiles for 15 years and recorded their body temperatures.

Crocodiles in Australia Are Shifting Their Behavior Because of Climate Change, and It Might Harm Their Ability to Hunt

A new study finds that as temperatures rise, the animals are getting hotter, spending less time diving and putting more effort into cooling off

In captivity, baby loggerhead turtles do a little dance when they know food is coming.

Dancing Baby Sea Turtles Help Researchers Unravel the Mysteries of Their Navigational Superpowers

Loggerhead turtles can identify specific magnetic signatures, according to a new study, hinting at how the aquatic reptiles manage to return to the same foraging and nesting sites over and over again

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