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You are here: Home / Aquatic Species / Species Profiles / Bullfrog
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BullfrogScientific name: Lithobates catesbeianus (formerly known as Rana catesbeiana) (ITIS)

Common name: American Bullfrog

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Selected Resources

Native To: Central and Eastern U.S. (Clarkson and deVos 1986)

Date of U.S. Introduction: First introduced to the Western U.S. in the early 1900s (Clarkson and deVos 1986)

Means of Introduction: Accidentally introduced during trout stockings; also introduced through the aquarium trade and for sport and pest control (Lorvelec and Detaint 2006; NAS Database)

Impact: Competes with and preys on native species (Ficetola et al. 2007)

Current U.S. Distribution: Western U.S.



Selected Resources:


Invasive Species Compendium - Rana catesbeiana
CAB International.

Delivering Alien Invasive Species Inventories for Europe (DAISIE): Species Factsheet - Lithobates catesbeianus
European Commission. Sixth Framework Programme.

American Bullfrog
Great Britain Non-Native Species Secretariat.

Global Invasive Species Database - Lithobates catesbeianus (amphibian)
World Conservation Union. Invasive Species Specialist Group.


Nonindigenous Aquatic Species Database - Lithobates [=Rana] catesbeianus
DOI. USGS. Southeast Ecological Science Center.
Provides distribution maps and collection information (State and County).

Rana catesbeiana - Aquatic Nuisance Species Research Program
DOD. USACE. Engineer Research and Development Center. Environmental Laboratory.

British Columbia Ministry of Environment (Canada). Frogwatch Program.


Pima County (Arizona).

Bullfrog - Invasive Species Fact Sheet (PDF | 1.57 MB)
Oregon Department of Fish and Wildlife.

North American Bullfrog - Appendix A-84, 2010 Utah Aquatic Invasive Species Management Plan (2010; PDF | 746 KB)
Utah Department of Natural Resources. Division of Wildlife Resources.

Washington State Recreation and Conservation Office. Washington Invasive Species Council.


Animal Diversity Web - Lithobates catesbeianus
University of Michigan. Museum of Zoology.

Introduced Species Summary Project - North American Bullfrog
Columbia University. Center for Environmental Research and Conservation.


Elkhorn Slough Amphibians: American Bullfrog
Elkhorn Slough Foundation (California).


Clarkson, R.W. and J.C. de Vos, Jr. 1986. The bullfrog, Rana catesbeiana Shaw, in the Lower Colorado River, Arizona-California. Journal of Herpetology 20(1):42-49.

Ficetola, G.F., W. Thuiller, and C. Miaud. 2007. Prediction and validation of the potential global distribution of a problematic alien invasive species - the American bullfrog. Diversity and Distributions 13(4):476-485.

Integrated Taxonomic Information System. Lithobates catesbeianus. [Accessed Sep 10, 2014].

Lorvelec, O. and M. Detaint. 2006. Delivering Alien Invasive Species Inventories for Europe (DAISIE): Species Factsheet - Lithobates catesbeianus.

Nonindigenous Aquatic Species Database. Lithobates catesbeianus. USGS, Gainesville, FL. [Accessed Sep 16, 2014].

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Last Modified: Mar 20, 2015
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