My farm is hills and river bottom. In the bottoms the water table is pretty shallow. I noticed one of my cats spends a lot of time down by the little ditch I cut in to let the rain water drain off the lower front yard. Bob would sit there for half an hour or so every day, and I always thought it was scoping out mice or frogs. Everybody has seen those little "chimneys" that crawdads make when they are excavating thier holes. I took a lawn chair down there and sat and watched Bob for a while. She (Bob is a girl cat)(long story) would sit and wait at an active chimney and then pounce on the crawdad as it added to it's chimney. Now, both Bob and Hoppy have plenty to eat from me. There is a feeder that holds 20 lbs. of dry food, and table scraps when I get to it. Haven't had a mouse in the house since they have been there, but it seems her favorite foods are pickle loaf, Blue jays, and crawdads. I just never saw a cat HUNT crawdads before.