Lesser Siren vs. Dwarf Waterdog

Both keep bushy gills for life and turn up in the same Sandhills and coastal plain streams and swamps. A: Eel-like, with only two small front legs and no hind legs in the Lesser Siren; salamander-shaped, with four legs, each with four toes in the Dwarf Waterdog.

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

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• Northern Dwarf Siren vs. Lesser Siren
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