Sure they do. I've caught bass on dry flies, but they're usually smaller bass under 15 inches. As a rule the larger the bass, the larger the food items it tries to take. It's a matter of conservation of energy. If it takes the same amount of energy to take a one inch food item as a six inch food item, the fish will go after the larger item because it is more efficient. That said, I've seen bass sip mayflies from the surface with about as much ripple as a trout, or pull a duckling down with almost no ripple or splash. That's part of what makes them fun to catch.

Jim Smith