Alerted Eastern Collared Lizard
A female eastern collared lizard in an alerted stance, at John Martin Reservoir, Colorado, July 20, 2023. Collared lizards are most known for their ability to run on their hind leg and are commonly found in the south-central United States and Mexico.

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Photo by: USACE-Albuquerque District |  VIRIN: 230720-A-A1412-1024.JPG