Frogs and toads are found throughout Oregon, but usually not too far from streams or moist habitat.
Coastal Tailed Frog - Ascaphus truei
9 Types of Frogs Found in Oregon! (ID Guide) - Bird Watching HQ
Frogs could get their own underpass on Portland highway, replacing 'frog taxi'
Frogs and Toads Oregon Department of Fish & Wildlife
Oregon Spotted Frog Monitoring and Research Project Whatcom County Amphibian Monitoring Program (WCAMP)
Western toad Washington Department of Fish & Wildlife
Columbia Spotted Frog - Montana Field Guide
ODFW Conservation Strategy Frogs and Toads
Help with Toad Tracking
South Carolina Frogs and Toads – The Frog Lady
ODFW Conservation Strategy Frogs and Toads
Question about Native NW Oregon, USA frog species