アメリカ内務省のインスタグラム(usinterior) - 12月4日 10時05分

On the edge of the continent’s tallest sand dunes, grass prairies are home to herds of North American pronghorn. Easy to distinguish based on their permanent horns, pronghorn use speed and teamwork to avoid predators. When one individual detects danger, it flares its white rump patch, signaling the others to flee. The #pronghorn is well adapted for outrunning its enemies with an oversized windpipe and heart that allow large amounts of oxygen and blood to be carried to and from its unusually large lungs. Pronghorn can sustain sprints of 45–55 mph. Such speed, together with keen vision, make the adults difficult prey for any natural predator. We’re glad this one stood still long enough for a picture at Great Sand Dunes National Park & Preserve in #Colorado. Photo @greatsanddunesnps by Patrick Myers, #NationalPark Service. #travel #FindYourPark #wildlife #usinterior

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