Common mudpuppy facts, pictures and information. The common mudpuppy is a large salamander found in North America. Unlike many amphibians, it never loses its gills, and upon reaching adulthood does not leave the water. Let’s find out more about the ‘waterdog’ … Common Mudpuppy Facts At A Glance Other Name(s): Waterdog Scientific name: Necturus maculosus … Continue reading Common Mudpuppy Facts, Pictures & Information. Discover A North American Amphibian That Never Leaves The Water.