You Can Trust These Breeds to Produce Top-Notch Watchdogs 

That is why it makes no difference how big the dog is; what matters is that it is vigilant and can bark effectively. 

Even though these breeds are often classified as giant, medium, or tiny, 

our list shows that size is not everything when it comes to a good watchdog.  

The study states that the Scottish Terrier, Rottweiler, and German Shepherd are the three best watchdogs. 

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The Chihuahua, at number eight, is an impressive little dog breed.  

Less than six pounds is its weight! On the other hand, the American Kennel Club claims that Chihuahuas have a terrier-like temperament and a large personality.  

Aside from being one of the best security dogs, the 80–135 pound Rottweiler serves a dual purpose.  

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