Dwarf sirens are eel-like salamanders of the genus Pseudobranchus. Dwarf sirens possess external gills throughout adulthood and lack hind legs, and can be distinguished from members of the genus Siren in that dwarf sirens have three toes on each foot rather than four. Whereas sirens has three gill slits, dwarf sirens keeps just a single slit.[1] Like sirens, dwarf sirens are restricted to the Southeastern United States.
The genus Pseudobranchus consists of the following extant species:
There are also two extinct species known from fossil evidence: