Bull frog at Sacramento National Wildlife Refuge Complex

Sacramento National Wildlife Refuge Complex

California's battle to control non-native bullfrogs

Sacramento River National Wildlife Refuge

Sacramento National Wildlife Refuge Complex

American Bullfrog (Lithobates catesbeianus)

Bullfrog Action Group

Sacramento NWR Complex - Plan Your Visit

FrogLog 108 by Amphibian Survival Alliance - Issuu

American Bullfrog (Lithobates catesbeianus)

When introduced prey violates trophic hierarchy: Conservation of

WISC - Washington Invasive Species Council

Bullfrog Action Group

Biologist seeks to eradicate invasive bullfrogs in Plumas National

American Bullfrog (Lithobates catesbeianus)