Reptiles

Cassius held the title of the largest crocodile in captivity for much of his life. His age? That's harder to know.

After the Death of Cassius, the World's Largest Captive Crocodile, Scientists Are Trying to Solve the Mystery of His Age

The beloved reptile in Australia died last weekend and was thought to be up to 120 years old, though that age is only an estimate. Research on his bones might reveal a more exact number

Two lynx shelter from the wind behind their parent, who looks into the camera.

See 15 Winning Images From the Wildlife Photographer of the Year Contest

Breathtaking shots shine a light on the wonders of wildlife and the threats that human activities pose to the natural world

PaleoScan operates at Plácido Cidade Nuvens Museum of Paleontology (known by the Portuguese abbreviation MPPCN) in Brazil. For a typical procedure, multiple fossils are placed together on the calibration board to be scanned simultaneously.

This Innovative Device Allows South American Paleontologists to Share Fossils With the World

PaleoScan offers scientists at far-flung institutions a less expensive way to digitize their collections and preserve at-risk specimens of fish, turtles, pterosaurs and more

A coating of iron on Komodo dragons' teeth could help keep them sharp for tearing into prey, as well as protect them from digestive acids.

Komodo Dragons Have Iron-Coated Teeth, Study Finds

New research provides the first evidence of the adaptation in a carnivorous reptile, and it might hold clues to understanding the teeth of dinosaurs

Researchers experimented with venom from red spitting cobras (pictured here), as well as black-necked spitting cobras.

Common Blood Thinners Could Combat Snakebites, Preventing Tissue Damage and Amputations, Study Finds

An estimated 400,000 people per year are permanently disabled because of snake venom, which can cause lesions and necrosis at the bite site

Rattlesnakes have gotten a bad rap over the years, but a live stream of their attentive parenting behaviors could help change that.

Look Into a 'Mega Den' of 2,000 Slithering Rattlesnakes With This Live Stream in Colorado

Run by researchers at Cal Poly, the stream is part of a citizen science initiative that aims to change the public's perception of the much-maligned reptiles

Asteroid impacts and volcanism have led to mass extinctions on our planet.

Has Life on Earth Survived More Than Five Mass Extinctions?

Scientists aren’t just arguing whether humans are causing a sixth mass extinction event now, but whether many more occurred in the past

A researcher stands with a measuring tape, next to a large rock with multiple animal engravings.

130-Foot Snake Carving Slithers Through 2,000-Year-Old Rock Art Found in South America

The conspicuous reptile renderings spotted along the Orinoco River likely functioned as territorial markers, akin to pre-Colombian road signs

A sea turtle enters the waters of the Galápagos Islands to join divers who are exploring its home.

Celebrate World Turtle Day With 15 Photographs of the Delightful Reptiles

These shots from the Smithsonian Magazine Photo contest show why turtles are so terrific

Dice snakes feigned their own deaths with a variety of mechanisms, including filling their mouths with blood (shown right).

Dice Snakes Fake Their Own Deaths With Gory, Poop-Filled Theatrics

When attacked by a predator, the reptiles can play dead with convincing detail, employing blood and feces for the show

Close-up showing the Archaeopteryx fossil’s skull, neck, spine, rib cage and wing bones. The fossil will go on view at Chicago's Field Museum on May 7.

Chicago Museum Unveils the 'Most Important Fossil Ever Discovered': the Feathered Dinosaur Archaeopteryx

Archaeopteryx provided the missing link between dinosaurs and the avians of today, serving as critical evidence for Charles Darwin’s theory of evolution

Exceeding 50 feet in length, Mosasaurus hoffmannii was among the largest mosasaurs.

Massive Mosasaurs May Have Evolved More Than Once

The predators, which were made famous in the “Jurassic World” franchise, likely arose at least three times

Scientists are at odds about how intelligent T. rex was.

How Intelligent Was T. Rex? Scientists Suggest the Dinosaurs Were Like 'Smart, Giant Crocodiles'

A new paper refutes the idea that T. rex was as brainy as a baboon, furthering the debate on the extinct reptile's intellect

The vertebrae of the snake that the researchers dug up. Based on these bones, they estimate Vasuki indicus was between 36 and 50 feet long.

Scientists Uncover Bones of Massive Extinct Snake, Comparable in Size to the 43-Foot Titanoboa

The 27 vertebrae discovered in India suggest the enormous creature, dubbed Vasuki indicus, was between 36 and 50 feet long

In a modified version of the mirror self-recognition experiment, eastern garter snakes showed signs that they recognize their own scent.

Can Snakes Recognize Themselves? One Species Has Passed a Modified 'Mirror Test' Based on Smell

Eastern garter snakes might recognize their own scents, suggesting the reptiles are more cognitively complex than thought, according to a new study

The synthetic antibody targets a toxin produced by the Elapidae family of snakes, which includes cobras, kraits and mambas.

Deadly Snake Venom Is No Match for This New Synthetic Antibody

Scientists have created a treatment that targets a toxin produced by cobras, mambas and kraits, laying the foundation for a future universal antivenom against snake bites, according to new research

The cat-eyed snake slithers in the Peruvian Amazon.

A Serpentine 'Explosion' 125 Million Years Ago Primed Snakes for Rapid, Diverse Evolution

Researchers say an evolutionary "singularity" led to several small, quick changes in snake species, from legless bodies and flexible skulls to chemical-sensing abilities

The earliest known fossil of epidermis was preserved due to unique circumstances.

This 288-Million-Year-Old Fossilized Scrap of Skin Is the World's Oldest

The remains, found in an Oklahoma cave, belonged to a lizard-like reptile

A turtle appears to smile as a dragonfly alights on its nose.

See 25 Breathtaking Images From the Wildlife Photographer of the Year Contest

Representing some of the world's best nature photography, the pictures are being put to a popular vote for the People's Choice Award

An illustration of Nanotyrannus attacking a juvenile T. rex

Decades-Long Debate on 'Teenage' Tyrannosaur Fossils Takes Another Turn

A new paper adds to evidence suggesting a group of disputed fossils, identified by many scientists as young T. rex, are actually another species

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