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| | Gray Wolf - Wikipedia, the free encyclopedia |
 | | Howling can also serve as a declaration of territory, as portrayed by a dominant wolf's tendency to respond to a human imitation of a "rival" individual in an area that the wolf considers its own. |
 | | Wolf growls have a distinct, deep, bass-like quality, and are used much of the time as a threat, though they are not always necessarily used for defense. |
 | | In brief, the gray wolf, which, at one point, could be found in any ecosystem on every continent in the Northern Hemisphere, was persistently one of the first species to go once a significant population of humans settled in a given area. |
| en.wikipedia.org /wiki/Wolf (6521 words) |
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