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Frogs

A male Cope's gray treefrog is smaller than a female and attaches to her back as she looks for a spot to lay eggs.

Female Treefrogs Experience ‘Choice Overload’ Amid Too Many Mating Calls From Males

Faced with a chorus of potential mates, female Cope’s gray treefrogs may be overwhelmed by the number of options and struggle to make a careful decision, a study suggests

Illustration of the La Brea Tar Pit's ancient habitat, with the newly discovered toad species (center and right) and the Mexican burrowing toad (bottom)

Paleontologists Discover a New Species of Ice Age Toad at the La Brea Tar Pits, Offering Clues About the Area’s Ancient Climate

The fossilized remains, recovered in 1929, were part of La Brea’s relatively understudied amphibian collection. Since toads are cold-blooded and sensitive to environmental changes, the discovery can help researchers piece together past climate conditions

An American bullfrog, which is the largest frog species in North America

This Deadly Shellfish Poisoning Has No Antidote. A Protein Found in American Bullfrogs Could Change That

A study in mice found that a protein called saxiphilin acts like a sponge against a deadly toxin produced by algal blooms. The harmful agent, which accumulates in certain seafood, can cause a life-threatening illness called paralytic shellfish poisoning

Two Alpine ibexes butt heads, slamming their horns together in a powerful battle that can be heard from far away. They wandered up the slope together afterward.

See 15 Stunning Images That Won the German Society for Nature Photography’s Annual Contest

From a lunging frog to the majestic movements of penguins, the honored photographs capture the wonder of wildlife and beauty of natural landscapes

Participants listened to pairs of mating calls made by numerous creatures, including male green treefrogs.

Humans and Animals Often Like the Same Mating Calls, Supporting a 150-Year-Old Observation by Charles Darwin

New research by Smithsonian scientists suggests that preferences for certain sounds might be evolutionarily conserved

Panamanian golden frog in nature

Panamanian Golden Frogs Disappeared From the Wild Due to a Deadly Fungus. Now, Scientists Are Returning Them to Nature

Smithsonian researchers in Panama have begun to reintroduce native golden frogs to the wild in special enclosures

Scientists found that fringe-lipped bats have a roughly 50 percent success rate when trying to capture prey.

These Lazy Bats Are Super-Efficient Killers That Carefully Conserve Energy to Attack at a Moment’s Notice

Wild fringe-lipped bats spend just one-tenth of the night in flight, but they can precisely snatch a calling frog and nab prey that rivals their own size

A small underwater lens made a coral in Indonesia look like another common lifeform.

See the Beauty of Corals, Beehives, Mushrooms and More in These 11 Images From the Close-Up Photographer of the Year Awards

Now in its seventh year, the competition honors macro, micro and close-up images snapped around the world

Through gene-editing, researchers in the field of synthetic biology hope to make endangered species more resilient against disease or climate change and protect human health, among other goals.

Three Stunning Ways Biologists Aim to Edit Animal and Plant Genes to Fight Diseases and Extinction

The strategy, known as synthetic biology, is gaining momentum globally as a conservation tool and human health solution, despite attracting some critics

Golden apple snails have eyes that are similar to humans’—and they can regenerate an amputated eye in just a month. Scientists uncovered a gene related to that process, laying the groundwork for more research that could help humans with eye injuries.

Eight Fascinating Scientific Discoveries From 2025 That Could Lead to New Inventions

By studying the natural world, scientists find blueprints for innovations that can improve human lives—in the genes of a shark, the fur of a polar bear and the flipper of an extinct reptile

In a new study, 79 percent of black-spotted pond frogs successfully consumed the northern giant hornet.

‘Murder Hornets’ Might Strike Terror in Humans, but These Frogs Can Eat Them for Lunch

Watch a pond frog effortlessly devour the northern giant hornet, the largest hornet in the world, while sustaining stings that are deadly to many animals

The skin of the three-striped poison dart frog, Ameerega trivittata, contains a cocktail of lethal toxins that interfere with the function of key cell proteins. That’s a challenge for any prospective predator.

These Animals Eat Poisons and Don’t Die. Some Even Become Toxic in Turn

Critters consuming species that harbor deadly toxins have evolved a suite of clever strategies to keep out of harm’s way. Scientists are starting to unravel how these protections work on the molecular level

For two days at the start of monsoon season on the Indian subcontinent, male Asian common toads (right) turn bright yellow, while females (left) stay brown.

For Two Days Each Year, These Drab Brown Toads Turn a Dazzling Neon Yellow—and Scientists Finally Know Why

When monsoon rains begin to fall on the Indian subcontinent, Asian common toads congregate at temporary puddles for a frenzied, two-day mating spree

A close-up of a gum leaf skeletonizer caterpillar, also known as a "Mad Hatterpillar" because of its distinctive stacked head capsules, left behind with every molt. The photo won the invertebrate behavior category.

See 15 Wondrous Winning Images From the 2025 Wildlife Photographer of the Year Awards

The eye-catching wildlife photos highlight both the beauty and the harsh realities of nature

Crossing roads is a dangerous part of the migratory journey for many amphibians. In Monkton, Vermont, two tunnels beneath a street are helping frogs, salamanders and other creatures reach their destinations safely, according to a new study.

Two Wildlife Tunnels Are Saving Thousands of Amphibians From Being Crushed by Cars in Vermont

New research finds a pair of underpasses installed under a road that crosses a migration corridor have led to an 80.2 percent reduction in amphibian deaths

A researcher swabs a frog. 

Scientists in Australia Mapped the Genome of an Endangered Frog Species in an Effort to Save It

A deadly fungus threatens the southern corroboree frog, which needs a lot of help to survive

Blue jeans poison dart frogs cannot be handled since their skin—not made of denim—is extremely toxic.  

Smithsonian Photo Contest Galleries

See Fantastic Frogs in 15 Fun Photographs

Hop through these images from the Smithsonian Magazine Photo Contest

Dolly was a female sheep—and the first mammal ever cloned from an adult cell. Her preserved remains are on display at the National Museum of Scotland in Edinburgh.

On This Day in History

Why Scientists Kept the Birth of Dolly, the World’s First Cloned Mammal, a Secret for Seven Months

The scientific breakthrough, announced on this day in 1997, proved that geneticists could clone an adult mammal, giving rise to a new era of ethical debate and experimentation

A Surinam golden-eyed tree frog calls for a mate, puffing out its cheeks.

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

Cast your vote for your favorite of the photographs, which are all contenders for the People’s Choice award, through January 29

The Amazon tree boa (Corallus hortulana) is not a new species, but it's one of the reptiles documented on a 2022 expedition to the Alto Mayo region of Peru.

Expedition Discovers 27 New Species in Peru, From an ‘Exceedingly Rare’ Amphibious Mouse to a Blob-Headed Fish

The hidden creatures were found in a densely populated region known for its successful—and controversial—conservation tactics

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