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 excluding …

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 environments.

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.

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 absorb water...

Jul 9, 2024 · Amphibians are a group of cold-blooded tetrapods (four-limbed vertebrates), except those with an amniotic membrane (the amniotes). They are a paraphyletic group belonging to the class …

Explore facts and photos about amphibians found in the United States. Learn about their range, habitat, diet, life history, and more.

Feb 6, 2025 · Amphibians are a class of vertebrates that include frogs, toads, salamanders, and newts. They are unique for their ability to live both in water and on land. Amphibians typically undergo …

Feb 28, 2025 · Named for their dual existence – they live partly in water, partly on land – amphibians are found on every continent except Antarctica and reside in a variety of habitats including wetlands, …

Amphibians are cold-blooded vertebrates belonging to the class Amphibia, including all frogs, toads, salamanders, newts, and caecilians. They spend part of their lives in water and the rest mostly on land.

Amphibians are cold-blooded, vertebrate animals that have an aquatic phase of life (spent in water, breathing through gills) and a terrestrial phase of life (living on land, breathing with lungs).