Oregon Spotted Frog
Oregon Spotted Frog is recognizable by a large brown-to-reddish frog with black spots that have ragged edges and light centers.

Artwork inspired by Rick Bartow
Oregon Spotted Frog occupies shallow marshes, wet meadows, and slow water with abundant emergent vegetation. Look for a large brown-to-reddish frog whose black spots have ragged edges and light centers, then compare body shape and eye position with nearby frog species.
Occupied wetlands are fragmented and sensitive. Observe from a boardwalk or stable bank from March through October, document emergent vegetation and water conditions, and share exact locations only with conservation staff.
- Primary range
- Oregon
- Habitat
- shallow marshes
- Status
- Threatened
Quick guide
- Whole-form evidence
- A large brown-to-reddish frog with black spots that have ragged edges and light centers
- Second mark
- shallow marshes, wet meadows, and slow water with abundant emergent vegetation
How to verify Oregon Spotted Frog in the field
- Look from distance
- Scan warm shallow margins without entering vegetation.
- Check spots
- Ragged dark spots with pale centers support identification.
- Prevent disease
- Clean and dry footwear between wetlands.
- Protect records
- Share exact locations only with conservation staff.
Good to know
Oregon Spotted Frog wetlands are fragmented and sensitive. Stay on a boardwalk or firm bank, never enter emergent vegetation, and send exact coordinates and habitat photographs privately to Oregon conservation staff rather than posting them publicly.
Notice these
- A large brown-to-reddish frog with black spots that have ragged edges and light centers
- shallow marshes, wet meadows, and slow water with abundant emergent vegetation
- March–October in quiet wetland margins