American bullfrog - Invasive Species Council of British Columbia

Seeing so many invasive frogs, he asked permission to harvest them

Battling the Invasion: Updates on the Bullfrog Control Program in

Giant bullfrogs invade Vancouver Island - Men's Journal

American Bullfrog - CKISS - Central Kootenay Invasive Species Society

American Bullfrog - Montana Field Guide

Columbia Basin Aquatic Invasive Species Team - CKISS - Central

Small crews battle ravenous invasive bullfrogs that gobble up

Invasive species cost world US$16B: study

The Bullfrog Problem