guard dog

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guard′ dog`

or guard′dog`,

a large aggressive dog trained to guard persons or property; watchdog.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.guard dog - a dog trained to guard propertyguard dog - a dog trained to guard property  
working dog - any of several breeds of usually large powerful dogs bred to work as draft animals and guard and guide dogs
kuvasz - long-established Hungarian breed of tall light-footed but sturdy white dog; used also as a hunting dog
attack dog - a watchdog trained to attack on command
housedog - a dog trained to guard a house
schipperke - breed of small stocky black dogs originally used as watchdogs on boats in the Netherlands and Belgium
pinscher - any of three breeds of dogs whose ears and tail are usually cropped

guard dog

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References in periodicals archive ?
With therapy, she returned to her flock and served as a guard dog for several more years.
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The nine-month-old was destined for the guard dog training unit of the Ministry of Aircraft Production at Staverton Court, Gloucestershire, before getting a posting with the US military in the UK.
ON THE DEFENSIVE Security man with guard dog patrol near castle, right, yesterday
The dogs arrived on 8 November at the Ruaha Carnivore Project and are from the CCF's Livestock Guard Dog programme.
WanTED in the pet shop goes to try his luck in the circus, pet show pageant, guard dog duties and finally a home with Dot and her menagerie of cats.
We are so honored to be among the most recognized and respected companies in America, and acknowledged for truly differentiating our brand in the markets we serve," said Camille DeSantis, co-founder and chief of brand strategy at Guard Dog Brand Development, a boutique company specializing in identity development for companies and their products.
His superb nature make him a family pet, not a guard dog, and he would be fine with older children.