American bullfrogs have the potential to wreak havoc in B.C. watersheds - Langley Advance Times

American bullfrog - Invasive Species Council of British Columbia

American Bullfrog (Lithobates catesbeianus)

CoRIS Coral Glossary - NOAA's Coral Reef Conservation Program

American bullfrog - Invasive Species Council of British Columbia

Bullfrog Action Group

Invasive American bullfrogs worry Creston Valley conservationists

Bullfrog Action Group

Small crews battle ravenous invasive bullfrogs that gobble up

Invasive species cost world US$16B: study

American bullfrog Washington Department of Fish & Wildlife

Marys River Watershed Council - American Bullfrogs will eat just

Bullfrog Invasion - A crisis in the making.

American bullfrog - Invasive Species Council of British Columbia

Bullfrog eradication planned for Cache Creek Conservancy – Daily