Coyote
Most active at night and early hours of morning. Coyotes have black noses, with fur that is either grayish brown or yellowish brown. One interesting way to identify a coyote is to watch its tail when it runs, because coyotes run with their tails down, while wolves and dogs do not. In spring and summer, coyote hunt small prey like mice, and they eat berries, fruits, and vegetables in fall and winter. Coyotes often use howls, barks, yips, and growls to communicate with one another1.
For more information about coyotes and wild animals in general, click here to go to the Q&A page.
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References:
1) (2008, Feb 5). Coyotes. Retrieved April 4, 2009, from UMass Extensioin Web site: http://www.extension.org/pages/Coyotes
2) Image is ClipArt from Microsoft Word