Compare two species

Rio Grande Leopard Frog vs. Plains Leopard Frog

The owner's pair: their ranges overlap in west-central Texas (records shared). In California only the Rio Grande lives here (introduced). A: Continuous back to the groin, bending inward near the hip in the Rio Grande Leopard Frog; broken near the hip; the rear piece starts again, set inward in the Plains Leopard Frog. B: Plain, dark or marbled, no pale centre spot in the Rio Grande Leopard Frog; a distinct bright pale spot in the middle in the Plains Leopard Frog. C: Paired sacs on the sides; loose folds of skin at the jaw corners when deflated (no open photo of a calling male) in the Rio Grande Leopard Frog; internal or tiny; no loose skin at the jaw corners (no open photo of a calling male) in the Plains Leopard Frog. D: A few short chucks then a fast rattle, about 10 to 12 pulses a second in the Rio Grande Leopard Frog; a single short, low chuck or clack, about 2 to 3 pulses a second in the Plains Leopard Frog. Both calls can be played on the species pages.

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Rio Grande Leopard Frog

Lithobates berlandieri

Plains Leopard Frog

Lithobates blairi

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

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