Frogs

A red-eyed treefrog hangs on to a leaf in Costa Rica.

Why Frogs Survived the Asteroid That Wiped Out the Dinosaurs

Not too big, not too small—they were just the right size to live through Earth’s worst day

Five-day-old red-eyed treefrog embryos are tightly curled inside dehydrated eggs packed closely together. It’s dry enough to make them begin to hatch early amid heating.

When the Heat Is on, Red-Eyed Treefrogs Hatch Early

The embryos make the move from clutches on leaves to rainforest ponds below

The Panamanian golden frog is now extinct in the wild due to a disease caused by a fungus known as Bd or chytrid

Amphibian Plague Led to Malaria Surge in Humans

A new study marks the first time the frog pandemic has been linked to human health

In total, researchers made CT scans of the inner ears of 147 frog species. With these scans, the team determined that Brachycephalus toads' semicircular canals are the smallest ever recorded for adult vertebrates.

The Pumpkin Toadlet’s Miniature Size Makes It a Lousy Hopper

These amphibians’ tiny inner ear canals make balancing mid-jump a challenge

Archaeologists found the remains of roughly 350 frogs near an Iron Age roundhouse.

How Did Thousands of Frog Bones End Up Buried at an Iron Age Settlement?

Archaeologists are trying to make sense of the remains, found in a ditch in England

Genetically, each species were different, but the team also found differences in the skull shapes, the levels of bone formation in the skeleton, and the number of warts on the hands and feet. (Pictured: C. cueyatl)

Six New Miniature Frog Species Discovered in Mexico

The amphibians are found under leaf litter and hatch fully grown

Spotted tree frogs are critically endangered in New South Wales.

Critically Endangered Spotted Tree Frogs Released Into the Wild in Australia

Bushfires, fungal disease, predation and other threats have pushed these amphibians to the brink of extinction

African clawed frogs (Xenopus laevis) were able to regrow a functional limb within 18 months of the novel treatment.

Frogs Can Regrow Lost Legs in the Lab. Now, Researchers Say Human Limb Regeneration Could Happen 'in Our Lifetime'

A 24-hour treatment using a five-drug cocktail kickstarted a yearlong regrowth process in the amphibians

The researchers retrieved frog foam from the forests of Trinidad and brought it back to their lab after removing the eggs, hatching them and returning the tadpoles to the wild.

Frog Foam May Help Deliver Drugs to Human Skin

A new study suggests the concoction created by mating amphibians may help dispense medicine slowly over time

Little is known about the zombie frog and its cousins. They are rather plump with narrow mouths and pointed noses. The small, nocturnal amphibians of the genus Synapturanus live mostly underground.

How the Newly Discovered, Mud-Loving 'Zombie' Frog Got Its Name

German team discovers new amphibian species and two others deep in Amazon rainforest

The find suggests that the two frog species diverged 5.3 to 2.6 million years ago during the Pliocene Epoch, before Australia and New Guinea were separated by water, causing the two species to become distinct from one another.

Scientists Discover 'Chocolate Frog' in New Guinea

Despite its distinct cocoa color, the new species is related to the green tree frog

The new species of toadlet, Brachycephalus rotenbergae, opens its mouth in a defensive posture.

Biologists Discover New Species of Glowing Pumpkin Toadlet

The bright orange amphibian, which shines green under UV light, is different from other pumpkin toadlets due to its appearance and call

The biodiversity map predicted that amphibians and reptiles have the most undiscovered species to date. Pictured: blue poison dart frog (Dendrobates tinctorius "azureus")

This Map Shows You the Odds of Finding a New Species in Your Neighborhood

The 'Map of Life' predicts where undiscovered birds, reptiles, amphibians and mammals could be found around the world

Panamanian golden frogs—such as F1, seen here—are native to the rainforests and cloud forests of Panama but haven't been seen in the wild since 2009. Each creature's bright coloration warns predators of its deadly skin, which contains enough toxins to kill 1,200 mice.

A Small Band of Panamanian Golden Frogs Is Saving Their Species From Oblivion

Victims of a deadly fungus, the amphibians are now being selectively bred through a program at the Smithsonian's National Zoo

A male green tree frog calls out to females.

This Frog's Lungs Work Like Noise-Cancelling Headphones

When the green tree frog inflates its lungs, its eardrums become less sensitive to the calls of other frog species

A small-banded kukri snake seen with its head thrust inside the body of an Asian common toad. This snake does this to feed on its prey's internal organs, and, perhaps, to avoid the poisonous milky secretions that can be seen on the toad's back.

This Snake Slurps Organs of Living Toads in Grisly Feeding Strategy

Researchers say no other snakes are known to feed this way, adding that the snakes may feed this way to avoid toxins secreted from the toads’ backs

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

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 male Thoropa taophora, pictured near Sununga beach in Brazil.

This Frog Mates With Two Females in an Unusual Love Triangle

Relationships like these are rare among amphibians, scientists say

A hypothetical escape route for Regimbartia attenuata

When This Beetle Gets Eaten by a Frog, It Heads for the 'Back Door'

New research details how this Japanese water beetle travels through the bowels of its predator to emerge out the other end, alive and unharmed

New research suggests this legless amphibian called a caecilian may be the first known amphibian to possess a venomous bite.

This Worm-Like Amphibian May Pack a Venomous Bite

A new study suggests that legless burrowers called caecilians may be the first known amphibian to have venom glands in their mouths

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