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  1. American bullfrog - Wikipedia

    The American bullfrog (Lithobates catesbeianus), often simply known as the bullfrog in Canada and the United States, is a large true frog native to eastern North America. It typically inhabits large …

  2. The Bullfrog Is So Resilient, It's Invasive | HowStuffWorks

    Sep 29, 2025 · What Is a Bullfrog? Scientifically known as Lithobates catesbeianus (formerly Rana catesbeiana), the American bullfrog is native to eastern North America but has since spread to the …

  3. American Bullfrogs Fast Facts - U.S. National Park Service

    Aug 24, 2021 · Amphibians: Bullfrogs are amphibians. All amphibians are ectotherms (cold-blooded), have soft, usually moist skin, lay eggs without shells, and have a two-stage life cycle (a gilled larval …

  4. Bullfrog - Description, Habitat, Image, Diet, and Interesting Facts

    The resonant bellow of a bullfrog is a quintessential sound of warm summer nights near waterways. More than just a vocal presence, these large amphibians are fascinating creatures with a rich natural …

  5. Bullfrog | Large, Green, Nocturnal | Britannica

    Bullfrog, (Lithobates catesbeianus), semi-aquatic frog (family Ranidae), named for its loud call. This largest North American frog, native to the eastern United States and Canada, has been introduced …

  6. American Bullfrog (Lithobates catesbeianus) - Species Profile

    Identification: Lithobates catesbeianus is the largest true frog native to Eastern North America (Dorcas and Gibbons 2008). Adults range in size between 9 and 15.2 cm (snout vent length) (Powell et al. …

  7. American Bullfrog - National Geographic Kids

    Bullfrogs live in freshwater ponds, lakes, and marshes. The male bullfrog's call is deep and loud. Jug-o-rum, jug-o-rum, it calls. Some people think it sounds like a cow mooing, which is why...

  8. American Bullfrog - U.S. Fish & Wildlife Service

    Native to the eastern United States and Canada, the American bullfrog is establishing itself around the world as an invasive species that easily outcompetes many native animals.

  9. 10 American Bullfrog Facts - Fact Animal

    American bullfrogs, so named because they sound like bulls during breeding season, have exploded across the country, and even across the globe. They inhabit large bodies of water, such as lakes, …

  10. The bullfrog coloration varies from dull green or olive to brown, with dark blotches on the backs and legs. A characteristic feature of the bullfrog is the large eardrum located behind its eye.