Thank you for your report! They are invasive, but are certainly common in the Portland-Metro area. The Oregon Dept. of Fish and Wildlife has a fact sheet about bullfrogs and actions that can be taken at https://www.dfw.state.or.us/conservationstrategy/invasive_species/docs/bullfrog_fact_sheet.pdf. There are some more control tips at https://www.denverpost.com/2019/07/03/boulder-county-invasive-american-bullfrogs/.
-Lindsey

Lindsey Wise
Aug. 11, 2021, 3:49 a.m.