Joel Sartore Joel Sartore

National Geographic Photographer and Speaker

Picture of a four-horned chameleon (Chamaeleo quadricornis quadricornis) at the Saint Louis Zoo.

ANI092-00046

A four-horned chameleon (Chamaeleo quadricornis quadricornis) at the Saint Louis Zoo.

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This photo © Joel Sartore 2023. Image usage guidelines

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