Mudpuppies are aquatic salamanders belonging to the family Proteidae. They are known for their distinctive external gills, which resemble feathery structures on the sides of their heads. These gills help them breathe underwater. Mudpuppies typically inhabit lakes, rivers, and streams in North America, particularly in the eastern and central regions. These creatures can grow up to 14 inches long and have a dark, mottled appearance. Mudpuppies are primarily nocturnal and feed on small fish, insects, and crustaceans. Unlike many other amphibians, they remain fully aquatic throughout their lives and do not undergo a complete metamorphosis.