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  1. Amphibian - Wikipedia

    Amphibians are ectothermic, anamniotic, four-limbed vertebrate animals that constitute the class Amphibia. In its broadest sense, it is a paraphyletic group encompassing all tetrapods, but …

  2. Amphibian | Characteristics, Life Cycle, & Facts | Britannica

    Nov 14, 2025 · amphibian, (class Amphibia), any member of the group of vertebrate animals characterized by their ability to exploit both aquatic and terrestrial habitats.

  3. Amphibian - Definition, Examples, Characteristics, and Life Cycle

    6 days ago · The term ‘amphibian’ is derived from the Greek word ‘amphíbios,’ meaning ‘both kinds of life,’ referring to their ability to inhabit terrestrial and aquatic environments. About …

  4. Amphibians – Definition, Examples, Characteristics

    Mar 13, 2024 · Amphibians are ectothermic (cold-blooded) vertebrates that belong to the Class Amphibia. A defining characteristics is their ability to live both in aquatic and terrestrial …

  5. Amphibian Pictures & Facts - National Geographic

    Amphibians are small vertebrates that need water, or a moist environment, to survive. The species in this group include frogs, toads, salamanders, and newts. All can breathe and …

  6. Amphibian Fact | Definition, Characteristics, List of Types

    What is an amphibian - Learn about their characteristics, what habitat they live in, examples and list of amphibians with names and pictures

  7. Amphibians - National Wildlife Federation

    All amphibians spend part of their lives in water and part on land, which is how they earned their name—“amphibian” comes from a Greek word meaning “double life.” These animals are born …

  8. Amphibians | U.S. Geological Survey - USGS.gov

    Feb 28, 2025 · More than 6,000 amphibian species exist worldwide, with approximately 300 of them found in the United States. In response to indications of declines of amphibian …

  9. Amphibians: Facts, Pictures & Information, Complete Guide To Amphibians

    May 25, 2018 · On this page you’ll find out what an amphibian is, how amphibians evolved, and the different types of amphibian alive today. On the way you’ll meet some amazing …

  10. List of amphibians - Wikipedia

    A list of amphibians organizes the class of amphibian by family and subfamilies and mentions the number of species in each of them. The list below largely follows Darrel Frost 's Amphibian …