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Giant Spotted Whiptail vs. Chihuahuan Spotted Whiptail

They meet in the canyons and grassland of far southeastern Arizona. A: Reddish orange in the Giant Spotted Whiptail; grey-brown body, olive-grey tail; no orange in the Chihuahuan Spotted Whiptail. B: Pale cream spots in the Giant Spotted Whiptail; pale spots turning bright yellow on the hind legs and lower back in the Chihuahuan Spotted Whiptail. C: Very big: to 5.5 in (14 cm) head and body in the Giant Spotted Whiptail; medium: to 3.9 in (10 cm) head and body in the Chihuahuan Spotted Whiptail.

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Giant Spotted Whiptail

Aspidoscelis stictogrammus

Chihuahuan Spotted Whiptail

Aspidoscelis exsanguis
Giant Spotted Whiptail vs. Chihuahuan Spotted Whiptail: comparison sheet with the differences marked

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

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