Common Mudpuppy
By Geology and Ecology of National Parks
2022 (approx.)

Detailed Description
This image shows a common Mudpuppy, often mistaken for an Eastern Hellbender. This Mudpuppy has red gills on the sides of its head. The size of these gills depends on how oxygenated the water is. West Virginia Division of Natural Resources.
Sources/Usage
Public Domain.