28. Mastiff
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These giant dogs cast an imposing shadow when first meeting strangers, but are surprisingly gentle and friendly when they get to know people.
When it comes to their families, they are patient, lovable companions that do well with gentle training. Their loyalty makes them extremely protective, and early socialization is essential.
Mastiff Summary
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Mastiff Overview
Temperament: Courageous, Dignified, Good-Natured
Height: 30 inches and up (male), 27.5 inches and up (female)
Weight: 160-230 pounds (male), 120-170 pounds (female)
Life Expectancy: 6-10 years
