Perennibranchiate Amphibians
Perennibranchiate Amphibians are a type of amphibian that retain their larval characteristics into adulthood, specifically maintaining external gills for respiration. This unique trait sets them apart from other amphibians, as they do not undergo complete metamorphosis like most species in their class. This specialized group of amphibians includes various species such as the mudpuppy and olm, which are well-known examples of Perennibranchiate Amphibians.