Mudbugs are also known as crawdads, crayfish, and crawfish. They are edible crustaceans related to shrimp and lobsters. When I was visiting Arkansas recently, it was hot and dry. I ran across a crawdad city in a ditch next to the road. Crawdads often live in water, but also dig burrows in dirt until they reach mud/moisture. They carry the extra mud to the surface making a tall “mud chimney” around the entrance to their burrow. Here is a video of a crawdad making his burrow: https://www.youtube.com/results?search_query=tech+360+crawfish+digging+hole
There are many ways to catch crawdads. If they are in water, a trap is the easiest way. Here are two different ways to catch crawdads if they are in the burrow:
https://www.youtube.com/watch?v=wMGn6jhZ0ZA
https://www.youtube.com/shorts/pxAhCU9A358
How to cook a crawdad:
https://www.youtube.com/watch?v=NuvdyhhfwsM
How to eat a crawdad: