Joel Sartore Joel Sartore

National Geographic Photographer and Speaker

Photo: An American bullfrog (Lithobates catesbeianus) at the Schramm Education Center near Gretna, NE. This specimen is axanthic, meaning it lacks yellow pigment.

ANI071-00438

An American bullfrog (Lithobates catesbeianus) at the Schramm Education Center near Gretna, NE.
This specimen is axanthic, meaning it lacks yellow pigment.

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This photo © Joel Sartore 2021. Image usage guidelines

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