Eastern Collared Lizard vs. Desert Collared Lizard
Both live on rocky slopes in northern and western Arizona and meet in the Grand Canyon region and the northwest, where they are easily confused. A: Round in cross-section (as wide as tall); no pale stripe along the top in the Eastern Collared Lizard; flattened side to side (taller than wide); males with a pale stripe along the top in the Desert Collared Lizard. B: Does not cross the throat in the Eastern Collared Lizard; encircles the neck in males in the Desert Collared Lizard. C: Males green to blue-green with a yellowish head; the front legs usually without spots in the Eastern Collared Lizard; grey-brown with soft yellow or orange crossbands; feet and legs often yellow-orange in the Desert Collared Lizard. Males of the Desert Collared Lizard have dark blue-grey to black patches on the throat and groin.
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