bull frog size:3.5-8" (largest frog in North America) coloring: green to yellow above with random mottling of darker gray,belly is white to cream voice: deep pitched jug o rum habitat: ponds, lakes, slow moving streams with sufficient vegetation, lays eggs in brush and stumps whose roots are at the water's edge, especially of willow tree, and under yellow water lilies food source: insects, crayfish, other frogs, minnows, large ones can eat small birds and young snakes.