American Bullfrog

No Bull(frog): These Guys are Bad News, by USFWS Columbia Pacific Northwest Region, USFWS Pacific NW Region

American bullfrog Washington Department of Fish & Wildlife

American Bullfrog (Lithobates catesbeianus) - HERPING VIRGINIA

Bullfrog - FrogWatch

Bullfrog as Invasive? Depends on Where You Live – Great Ecology

Adult male American bullfrog (© Jan Van Der Voort).

Discover Nature: American Bullfrog

Hungry Invaders: American Bullfrogs – Wildlife Leadership Academy

Kansas Herpetofaunal Atlas

How to Care for Your American Bullfrog

An invasive American bullfrog with tracking device.

American bullfrog