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Yellowstone National ParkJuvenile Bighorn Sheep casually amble along a precipice near Tower Falls.
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Yellowstone National Park
E is for Elk
A bull elk stands in a meadow.

 

 

Male elk are called bulls. They can have huge antlers like the one in the picture. Female elk are called cows, but they don't have antlers.

 
Lake Trout Illustration  

Did You Know?
Lake trout are an invasive species of fish that is decimating the native cutthroat trout population in Yellowstone Lake.

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Last Updated: July 10, 2007 at 12:28 EST