Guard Dog

A guard dog, an attack dog or watch dog is a dog used to guard against, and watch for, unwanted or unexpected people or animals. The dog is discriminating so that it does not annoy or attack familiar people.

Read more about Guard Dog:  Barking, Breeds, List of Breeds Commonly Used As Guard Dogs, List of Other Guard Dog Breeds

Famous quotes containing the words guard and/or dog:

    “Those that I fight I do not hate,
    Those that I guard I do not love;”
    —William Butler Yeats (1865–1939)

    “If you are a dog and your owner suggests that you wear a sweater ... suggest that he wear a tail.”
    —Fran Lebowitz (b. 1951)