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amphibians

Amphibians
Image: Saint Louis Zoo

Amphibians

Frogs, toads, salamanders, newts, and caecilians live "a double life" — literally. "Amphibian" comes from the Greek amphibios, which carries that meaning.

Rather than a shadow life, It refers to their two distinct life stages, larval and adult. Amphibians often live in two places, land and water. Investigate the more than 6,000 species alive today.

Saint Louis Zoo
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Weird Water-Holding Frogs

Weird Water-Holding Frogs

Humans can survive about three days without water. This frog? Two or more years. See what shedding its skin has to do with this feat. More...

Video
National Geographic
Poison Dart Frogs: Photo Gallery

Poison Dart Frogs: Photo Gallery

With their brilliant colors, these poison dart frogs are fun to look at. But they exhibit bright colors as a warning, not an invitation. More...

Images
National Geographic
Amphibians Quiz

Amphibians Quiz

Separate fact from fiction in these questions and you can “graduate” from egg to larva and eventually an adult amphibian. More...

Interactive
Conservation International
Emerging Explorers: Tyrone Hayes

Emerging Explorers: Tyrone Hayes

When biologist and herpetologist Tyrone Hayes saw reed frogs changing color, he connected the cause to contaminants in the water that people use for cooking and bathing. More...

Profile
National Geographic
Giant Salamanders Helped to Spawn

Giant Salamanders Helped to Spawn

The pepperfish is not a fish, but rather a 5-foot long, 80-pound salamander from Japan. The species has remained largely unchanged for the past 20 million years but today it's struggling to survive. More...

Video
National Geographic
What’s the Difference Between an Amphibian and a Reptile?

What’s the Difference Between an Amphibian and a Reptile?

Confused about how reptiles and amphibians differ? Take a look at the few, specific characteristics that distinguish them. More...

Video
Tennessee Aquarium
Amphibian Conservation

Amphibian Conservation

Frogs, toads, and other amphibians are extremely sensitive to environmental changes. Discover what’s threatening them worldwide as well as conservation efforts. More...

Article
ARKive
Amphibian Study Shows How Biodiversity Can Protect Against Disease

Amphibian Study Shows How Biodiversity Can Protect Against Disease

Take a look at research that shows that the more amphibian species that live in a pond, the better they're all protected against parasites and deformities. More...

Article
Science Daily
Amphibians: Slimy Is Good

Amphibians: Slimy Is Good

There's a good reason frogs, toads, and salamanders have moist skin. Find out how it aids these ancestors to all land animals. More...

Article
Biology4Kids.com
Froggy Forecasting: How Frog Health Predicts Pond Health

Froggy Forecasting: How Frog Health Predicts Pond Health

Take a closer look at frog malformations, then find out how to test the health of your local ponds and lakes. More...

Activity
Science Buddies
LSU Professor Discovers World’s Tiniest Vertebrate

LSU Professor Discovers World’s Tiniest Vertebrate

How do you find a needle in a haystack? Ask Chris Austin. He found the smallest known vertebrate in the world — a frog that's not even 1/3 of an inch long. More...

Profile
Louisiana State University

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