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National Geographic Wild 2015 Wolf Attack in Yellowstone

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The Lone Wolf of Yellowstone Park - Documentary Films Full Length

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The Lone Wolf of Yellowstone Park - Documentary Films Full Length The Gray Wolf, being the largest of the canid family, stands about 26 to 28 inches high at the shoulder for an adult male; a body length of 40 to 58 inches and tail approximately 13 to 20 inches long.

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In the 15 years since wolves returned to the park, they found the elk and coyote populations declined

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26 -36 in tall at the shoulder 4-6 ft in length from nose to tail males weigh 100 -300 lbs females weigh about 80 -110 lbs

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When the grey wolf was  reintroduced into the Grater Yellowstone Ecosystem in 1995 there was only one beaver colony in the park, said Doug Smith, a wildlife biologist in charge of the Yellowstone Wolf Project.

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in general wolf numbers within YNP had fluctuated between 83-400 wolves from 2009 and 2002

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the males in yellowstone  grow antlers from April or May until August or September; shed them in late winter and spring.

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As of January 2016, there were at least 99 wolves in 10 packs living primarily in Yellowstone