Mudpuppies are amphibians, not mammals, and they don't exhibit the same territorial behavior as some mammals. They are generally solitary creatures that prefer to live alone, and they don't have a strong need to defend a specific area.
While they may occasionally interact with other mudpuppies, they don't establish territories or build any structures like walls to mark them. They are more concerned with finding suitable hiding places and food sources than with defending a specific territory.