Reptiles and Amphibians - invasive

American Bullfrog (Lithobates catesbeianus) on Jul 8, 2012

Submitter does not have a specimen
EDRR Status: No Response/Action Required

Description of specimen

I can hear one American bullfrog at night. I have numerous native frogs on my propery.


Hi Renee, thank you for your report to our hotline. Sold for aquariums, American bullfrongs have also been released into the wild as an edible frog. In Oregon, they impact water quality and prey upon many native turtles, frogs, fish and snakes.This species is considered to be among the 100 worst invaders in the world ( - this article is a great article about the "Problems and opportunities managing invasive Bullfrogs: is there any hope?" It's by Michael J. Adams and Christopher A. Pearl.

You may also wish to read this article in the Statesman Journal that described the problem with bullfrogs in Oregon (

The bullfrog is native to central and eastern U.S. and southeastern Canada. ODFW provides a fact sheet ( on bull frogs, and encourages them to be harvested year round (a license is not required).

Bullfrogs have been in our state for so long that most people believe they are native.

Thanks again for your report to our hotline - contributions such as yours help us to understand the distribution of invasive species in our state.

Lisa DeBruyckere
July 8, 2012, 3:22 p.m.