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Compare two species

Texas Cooter vs. Rio Grande Cooter

They meet where the Edwards Plateau rivers run toward the Rio Grande. A: Broad yellow bars and blotches behind the eye in the Texas Cooter; thin yellow stripes only in the Rio Grande Cooter. B: Whorls and irregular rings in the Texas Cooter; bull's-eye rings: dark and pale rings one inside another in the Rio Grande Cooter.

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Texas Cooter

Pseudemys texana

Rio Grande Cooter

Pseudemys gorzugi
Texas Cooter vs. Rio Grande Cooter: comparison sheet with the differences marked

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

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