Guard dog
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A guard dog or watchdog is a dog used to watch for and guard people or property against unwanted or unexpected human or animal intruders. Wikipedia
Lifespan: Dobermann: 10 – 13 years, Bullmastiff: 7 – 12 years, Giant Schnauzer: 10 – 12 years, and more
Height: Dobermann: 2.2 – 2.3 ft., Bullmastiff: 2.1 – 2.3 ft., Giant Schnauzer: 2.1 – 2.3 ft., and more
Representative species
