Geographical Range Southeastern Canada, eastern and central United States (native range); introduced to western United States and various tropical and temperate regions worldwide
Habitat Lakes, ponds, rivers, streams, swamps, marshes
Scientific Name Rana catesbeiana
Conservation Status Common

If you spend any time on North America’s lakes, ponds or marshes, you can’t help but hear the low bellowing of the male American bullfrog. This large amphibian — the continent’s largest true frog — spends nearly all its time in the water. Its webbed feet and smooth, slimy skin help it move easily under the surface.

American bullfrogs feed on a wide variety of animals: snakes, worms, insects, crustaceans, even bats! They are also known to eat their own kind, including tadpoles.

Unlike many other amphibian species, American bullfrogs seem to thrive under adverse environmental conditions. They are able to tolerate the warmer water and vegetation-choked waterways associated with human development better than other frogs. In fact, scientists believe they’re so successful in some parts of their range, like California, that they’re driving other amphibian species to extinction.