Western Spiny-tailed Iguana vs. Green Iguana

Western Spiny-tailed Iguanas share seawalls and canal banks with Green Iguanas in south Florida. A: No big round scale on the cheek in the Western Spiny-tailed Iguana; a big, round, shield-like scale low on the cheek in the Green Iguana. B: Rings of big, spiny scales round the tail in the Western Spiny-tailed Iguana; smooth-scaled tail ringed with black bands in the Green Iguana. Young of both are bright green; look at the cheek.

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

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