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Mudsnake vs. Plain-bellied Watersnake

Both are big, dark snakes with a red belly, found in the swamps of the southern tip. The Mudsnake is glossy blue-black with smooth scales, and the red or pink of its belly runs up the sides as bars or triangles checkered with black; its tail ends in a sharp spine. The Plain-bellied Watersnake has dull, keeled scales, is plain dark brown above, and its red-orange or yellow belly is plain, without black checkering.

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Mudsnake

Farancia abacura

Plain-bellied Watersnake

Nerodia erythrogaster
Mudsnake vs. Plain-bellied Watersnake: comparison sheet with the differences marked

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

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