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. From Wikipedia
Volunteers and conservationists work to protect frogs, toads, and newts during their annual migration to breeding sites, but numbers have dropped significantly in recent decades.
