Northwestern Pond Turtle vs. Pond Slider

The Pond Slider, a released pet, is common in western Oregon ponds alongside the native pond turtle. A: No red or yellow patch in the Northwestern Pond Turtle; a red (or yellow) patch behind the eye in the Pond Slider. B: Plain, finely flecked in the Northwestern Pond Turtle; yellow bars on each plate (fading with age) in the Pond Slider.

Photographs via iNaturalist under Creative Commons licences; the photographers are credited on the sheet.

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