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Bullfrog Invasion of the Yellowstone River
American bullfrogs wreaking havoc in Fraser Valley watersheds - Mission City Record
B.C. frog hunter on mission to eradicate destructive American bullfrogs
Beware the American bullfrog!
Bullfrogs and Biodiversity, Conservancy Program
Bullfrog Action Group
EcoAmericas - Latin American environmental news coverage
American bullfrogs may be threatening a rare frog species in Brazil
The Bullfrog Is the “Great White Shark” of Arizona's Wetlands
Bullfrogs and Biodiversity, Conservancy Program