Rottweiler

The Rottweiler /ˈrɒtwaɪlər/ is a medium/large size breed of domestic dog. The dogs were known as "Rottweil butchers' dogs" because they were used to herd livestock and pull carts laden with butchered meat and other products to market. 

The Rottweiler was employed in its traditional roles until the mid-19th century when railways replaced droving for herding livestock to market. While still used in herding, Rottweilers are now used as search and rescue dogs, as guide dogs for the blind, as guard dogs orpolice dogs, and in other roles.

Life span: 8 – 10 years
Origin: Germany
Higher classification: Dog
Temperament: Devoted, Good-natured, Alert, Steady, Self-assured, Obedient, Calm, Confident, Courageous, Fearless
Weight: Female: 35–48 kg, Male: 50–60 kg
Height: Female: 56–63 cm, Male: 61–69 cm

source : wikipedia

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