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:

    “Most of us are aware of and pretend to detest the barefaced instances of that hypocrisy by which men deceive others, but few of us are upon our guard or see that more fatal hypocrisy by which we deceive and over-reach our own hearts.”
    —Laurence Sterne (1713–1768)

    “Leva tells me you’ve been eyeing the Captain’s wife like a hound dog at hunting time.”
    —Daniel Taradash (b. 1913)