This page provides all possible meanings and translations of the word guard dog
Random House Webster's College Dictionary
a large aggressive dog trained to guard persons or property; watchdog.
Category: Dogs, Cats, and Horses
watchdog, guard dog(noun)
a dog trained to guard property
A dog used to protect a property or its owner.
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.
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