The Mudpuppy is a type of aquatic salamander found primarily in North America. It is known for its distinctive external gills, which resemble feathery structures on the sides of its head. Mudpuppies typically inhabit rivers, lakes, and streams, preferring clean, cool waters. They are mostly nocturnal and feed on small fish, insects, and crustaceans. Mudpuppies can grow up to 14 inches long and have a dark, mottled body that helps them blend into their environment. Unlike many amphibians, they retain their juvenile features throughout their lives, a trait known as neoteny. They play an important role in their ecosystem by helping control the populations of their prey.