The Rottweiler (/ˈrɒtwaɪlər/, UK also /-vaɪlər/) is a breed of domestic dog, regarded as medium-to-large or large. The dogs were known in German as Rottweiler Metzgerhund, meaning Rottweil butchers' dogs, because their main use was to herd livestock and pull carts laden with butchered meat to market. This continued until the mid-19th century when railways replaced droving. The dogs were known in German as Rottweiler Metzgerhund, meaning Rottweil butchers' dogs, because their main use was to herd livestock and pull carts laden with butchered meat to market. This continued until the mid-19th century when railways replaced droving. Trotting in this breed is by no means a fault and is required. vansach.com. Archived from the original on 31 March 2012. Archived from the original on 31 March 2012. The American Kennel Club. Retrieved 7 April 2019. The Intelligence of Dogs, University of British Columbia, Vancouver.