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Northern Dwarf Siren vs. Greater Siren

Greater Sirens share the same south Georgia swamps; their young are striped. A: Three toes on each front foot in the Northern Dwarf Siren; four toes on each front foot in the Greater Siren. B: Small: 4 to 6 in, slender in the Northern Dwarf Siren; huge: to 3 ft, thick-bodied in the Greater Siren. Young Greater Sirens have light side stripes like the dwarf siren: count the toes.

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Northern Dwarf Siren

Pseudobranchus striatus

Greater Siren

Siren lacertina
Northern Dwarf Siren vs. Greater Siren: comparison sheet with the differences marked

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

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