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amphibian
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References & Edit History Quick Facts & Related Topics
Images & Videos
banded fire salamander (Salamandra terrestris) Green frog (Rana clamitans melanota).
Follow an amphibian's life cycle from an underwater egg to a land-roving organism
olympic torrent salamander (Rhyacotriton olympicus)
How do lungless salamanders breathe?
Know how hibernating frogs survive in freezing temperatures
Amazon leaf frog life cycle of the European common frog salamander larvae representative urodeles
For Students
Green frog (Rana clamitans melanota).
amphibian summary
Quizzes
Sea otter (Enhydra lutris), also called great sea otter, rare, completely marine otter of the northern Pacific, usually found in kelp beds. Floats on back. Looks like sea otter laughing. saltwater otters
Animal Group Names
Lion (panthera leo)
Deadliest Animals Quiz
Young chimpanzee dressed in a shirt and sweater vest, scratching his head thinking. (primates)
Wild Words from the Animal Kingdom Vocabulary Quiz
Mute swan with cygnet. (birds)
Match the Baby Animal to Its Mama Quiz
Black eyed tree frog (Agalychnis moreletii)
All About Amphibians
Read Next
Malayan Leaf Frog - Megophrys nasuta
9 Animals That Look Like Leaves
animal. Amphibian. Frog. Anura. Ranidae. Frog in grass.
Abundant Animals: The Most Numerous Organisms in the World
sea turtle (reptile). Green turtle (Chelonia mydas) (C. mydas) off the Hawaii Islands, Pacific Islands. Green sea turtle, chelonian. Homepage blog 2011, science and technology, animal
5 Vertebrate Groups
The polka-dot treefrog (Hypsiboas punctatus).
Freaky Fluorescent Frog Found
Spider monkey swinging in a tree. (primate, jungle animal)
Why Do Animals Have Tails?
Discover
A Factory Interior, watercolor, pen and gray ink, graphite, and white goache on wove paper by unknown artist, c. 1871-91; in the Yale Center for British Art. Industrial Revolution England
Inventors and Inventions of the Industrial Revolution
Super Typhoon Noru over the western tropical Pacific Ocean as observed by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA Aqua satellite July 31 2017
What Is the Difference Between a Typhoon and a Super Typhoon?
Close up of books. Stack of books, pile of books, literature, reading. Homepage 2010, arts and entertainment, history and society
12 Novels Considered the “Greatest Book Ever Written”
Rural Irish landscape, Sligo, Ireland.
Why Is Ireland Two Countries?
Thanksgiving Celebration Traditional Dinner Setting Food Concept
Why Is Thanksgiving in the U.S. Celebrated on a Thursday?
The Cheshire Cat is a fictional cat from Lewis Carroll's Alice's Adventures in Wonderland. (Alice in Wonderland)
11 Banned Books Through Time
Santa Claus flying in his sleigh, christmas, reindeer
Was Santa Claus a Real Person?

amphibian: Media

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Videos

Follow an amphibian's life cycle from an underwater egg to a land-roving organism
General characteristics of amphibians.
Video: Encyclopædia Britannica, Inc.
How do lungless salamanders breathe?
The red salamander (Pseudotriton ruber) is found through much of the eastern...
Video: Encyclopædia Britannica, Inc.
Know how hibernating frogs survive in freezing temperatures
Learn how a hibernating frog survives in a frozen environment.
Video: © Open University (A Britannica Publishing Partner)
See toads engage in amphibious amplexus and witness metamorphosis of tadpoles into toads
The life cycle of a North American toad.
Video: Encyclopædia Britannica, Inc.
Examine how a leopard frog's protruding independent eyes help it catch flies, earthworms, and other prey
A leopard frog (Rana pipiens) eating an earthworm.
Video: Encyclopædia Britannica, Inc.
Zoom in on the serpentine locomotion of the limbless, amphibious caecilian over soil
Caecilian moving over soil.
Video: Encyclopædia Britannica, Inc.
Witness the bullfrog's powerful action, generated by its hind legs, as it jumps through a field
The bullfrog (Lithobates catesbeianus) is a strong jumper common in many...
Video: Encyclopædia Britannica, Inc.
How Manú National Park in Peru protects biodiversity
Learn how and why inventories of the high level of reptile and amphibian biodiversity...
Video: Displayed by permission of The Regents of the University of California. All rights reserved. (A Britannica Publishing Partner)

Images

banded fire salamander (Salamandra terrestris)
Banded fire salamander (Salamandra terrestris).
Jacques Six
Green frog (Rana clamitans melanota).
Norman R. Lightfoot/Photo Researchers
olympic torrent salamander (Rhyacotriton olympicus)
Olympic torrent salamander (Rhyacotriton olympicus).
U.S. Fish and Wildlife Service
Amazon leaf frog
An Amazon leaf frog (Cruziohyla craspedopus) ascending a liana in an Ecuadorean...
© Dr. Morley Read/Shutterstock
life cycle of the European common frog
European common frog (Rana temporaria) eggs take about 35 days to hatch,...
Encyclopædia Britannica, Inc.
salamander larvae
Principal types of salamander larvae.
Encyclopædia Britannica, Inc.
representative urodeles
Representative urodeles.
Encyclopædia Britannica, Inc.
bullfrog
Bullfrog (Lithobates catesbeianus).
Encyclopædia Britannica, Inc.
Representative amphibians.
Encyclopædia Britannica, Inc.
Male tungara frog (Physalaemus pustulosus) with its throat sac inflated...
Michael Ryan, University of Texas at Austin
Eryops
Eryops, a large stout amphibian from the Carboniferous Period.
Encyclopædia Britannica, Inc.
Ichthyostega, model by J.S. Collard (H.R. Allen Studios).
Courtesy of the Royal Scottish Museum, Edinburgh; photograph, the Natural History Photographic Agency
amphibian brain structure
In amphibians such as the frog, the midbrain, containing the optic lobe, is the main...
Encyclopædia Britannica, Inc.
Tree of life illustrating the three-domain classification of life-forms
The tree of life according to the three-domain system of biological classification.
Encyclopædia Britannica, Inc.

Podcasts

“Amphibian Apocalypse”
John Rafferty of Encyclopædia Britannica and Dr. Karen Lips of the University of...
VIEW MORE in these related Britannica articles: