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 the amniotes (tetrapods with an amniotic membrane, such as modern reptiles, birds and mammals).
The taxonomic group of amphibians includes frogs, toads, salamanders and newts, and strange snake-like amphibians called caecilians. In this article we’re going to discuss this particular type of animal, and introduce 25 different examples of amphibians.
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...
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.
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 Amphibia.
Amphibians are an extraordinary class of vertebrate animals, with thousands of species ranging from tiny small frogs to the largest amphibians on Earth. Their ability to live in water and on land, regulate life through metamorphosis, and adapt to diverse habitats shows the resilience of evolution.
There are three groups of amphibians, defined by their orders: frogs and toads (Anura), salamanders and newts (Caudata), and burrowing legless and wormlike caecilians (Gymnophiona). There are actually 73 families and 7,292 species of amphibian in the world, but many are not as well known.
Explore facts and photos about amphibians found in the United States. Learn about their range, habitat, diet, life history, and more.