The Panamanian golden frog is one of more than 100 species of disappearing harlequin frogs.
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Frog Survival 101: Fake a Mean Look
Credit: David Cannatella
For nonpoisonous frogs, the trick to not becoming dinner is to look poisonous — but not too poisonous. Scientists studied frogs in the Amazon rainforest in Ecuador, and this non-toxic frog, Allobates zaparo, has colorful patterns that tell predators that it is toxic and would not make a good meal. Although A. zaparo can't actually back up this threat, its coloration fools predators into looking elsewhere for food.
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Ultrasonic Frogs Croak in Secret
Credit: Albert Feng
Chinese concave-eared torrent frogs have an ear for ultrasound, so other creatures don't hear them croak.
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Frog Hops Back into Existence
Credit: Carlos A. Rocha via Conservation International
The painted frog (Atelopus ebenoides marinkellei), from Colombia. The survival of the harlequin frog provides hope that other species might survive the killer fungus.
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Warming Kicks Frogs While They're Down
Credit: Steven M. Whitfield
Oophaga pumilio, the strawberry poison frog, is one of a number of species of amphibians and reptiles declining in lowland forests of Costa Rica.
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Fungus Sex Is Threat to Frogs
Credit: Vance T. Vredenburg, UC Berkeley
A mountain yellow-legged frog (Rana muscosa) at Milestone Basin in Sequoia National Park.
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Lost Forest in Africa Yields New Species
Credit: Andy Plumptre/Wildlife Conservation Society.
Researchers found two new species of frog on their expedition to a once lost forest in Africa.
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Bizarre Amphibians Found Living on the Edge
Credit: Sathyabhama Das Biju, ZSL
The purple frog is a burrowing species that spends most of the year up to 13 feet (four meters) underground feeding on termites.
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Tiny Newfound Frog Fits on a Fingertip
Credit: Alessandro Catenazzi, University of California, Berkeley
Noblella pygmaea on a fingertip. The frog is about 0.45 inches (11.4 millimeters) long.
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Study: Farms Fuel Frog Deformities
Credit: Pieter Johnson/University of Colorado at Boulder
Infectious parasites cause missing limbs, extra limbs and other malformations in frogs--and farm watershed may be to blame.
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'Bizarre!' Frog Tunes Ears to Specific Frequencies
Credit: Margaret Kowalczyk
Odorrana tormota frogs, shown here in an illustration, emit high-frequency ultrasound to compete with the din of their noisy surroundings.
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Frog Embryos Actively Seek Oxygen
Credit: Karen Warkentin.
Adult red-eyed treefrogs are the postcard-perfect mascot of tropical biology, but their eye-catching embryos get the cover of the November 2008 issue of the Journal of Experimental Biology.
A glass frog of the Nymphargus genus potentially new to science discovered in the mountains of the Darien in Colombia. Darien is a mountainous system isolated from the Andes Mountain range and is a recognized for its high biological diversity.
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Frogs Find Home in Elephant Dung
Credit: Ahimsa Campos-Arceiz
One of the species of frog (Sphaerotheca sp.) found in a pile of Asian elephant dung.
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Poisonous 'Golden Frog' Discovered
Credit: Conservation Leadership Programme
The newly-discovered golden frog of Supata could fit on the tip of your finger.
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Frog Dozes in Mud for Years
Credit: Sara M. Kayes
This burrowing frog (Cyclorana alboguttata) maximizes energy use to survive in a state of torpor for months or even years.
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Nearly Extinct California Frog Rediscovered
Credit: Adam Backlin, U.S. Geological Survey
USGS scientists found this adult mountain yellow-legged frog on June 10 in Tahquitz Creek, a rediscovered population of the endangered frog in the San Jacinto Wilderness, San Bernardino National Forest, California.
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New Spiders and Frogs Discovered in Papua New Guinea
Credit: Steve Richards
A frog, Litoria sp., believed to be new to science, and which uses a loud ringing song to call for a mate, was discovered in a rainforest during a Conservation International (CI) led Rapid Assessment Program (RAP) expedition of Papua New Guinea's highlands wilderness in 2008.
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Newfound Frog Species Threatened by Deadly Fungus
Credit: Andrew Crawford/STRI
The newly describe species of frog, Pristimantis educatoris, was collected in El Cope, in Panama's Omar Torrijos National Park, is about 0.8 to 1.6 inches (2 to 4 centimeters) long and has expanded, round and even finger disks and toes that distinguish it from other, closely related species. Its eye color varies from blood red to yellow-orange above and dark purple to dark grey below. The pupil is horizontal.
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World's Smallest Frog Packs Poison Punch
Credit: A. Rodriguez and M. Vences.
The smallest frog in the world would fit (with room for a buddy) on your fingertip.
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Solomon's Horned Frog
Credit: Fredrique Oliver
This horned frog is unique to the Solomon Islands.
In Deadly Frog and Bat Plagues, Eerie Similarities
Credit: A. Crawford
Panamanian marsupial frog, Hemiphractus fasciatus, getting "swabbed", or tested, for the presence of the microscopic fungal pathogen, Batrachochytrium dendrobatis, which is sweeping through Central America, decimating entire amphibian communities.
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Pesticide Turns Male Frogs into Females
Credit: Tyrone B. Hayes, the University of California, Berkeley.
The pesticide atrazine can turn male frogs into females that are able to mate and successfully reproduce. Here, two male frogs mating. The larger animal on the bottom has been completely feminized by atrazine exposure and can produce viable eggs.
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Frog Egg Cells Key Ingredient in Robotic Nose
Credit: Yu Zeng/UC Berkeley.
Male spiny frogs from the tribe Paini sport spines and powerful forelimbs. The species Quasipaa boulengeri is from the mountains of Sichuan, China.
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Endangered Tree Frog Bred In Captivity for the First Time
Credit: Brian Gratwicke, Smithsonian’s National Zoo