The German Shepherd or Alsatian is a German breed of working dog of medium to large size. The breed was developed by Max von Stephanitz using various traditional German herding dogs from 1899. It was originally bred as a herding dog, for herding sheep. It has since been used in many other types of work, including disability assistance, search-and-rescue, police work, and warfare. It is commonly kept as a companion dog, and according to the Fédération Cynologique Internationale had the second-highest number of annual registrations in 2013. Most commonly, German Shepherds are either tan/black or red/black. Most colour varieties have black masks and black body markings which can range from a classic 'saddle' to an overall 'blanket'. Rarer colour variations include sable, pure-black, pure-white, liver, silver, blue, and panda varieties. The all-black and sable varieties are acceptable according to most standards; however, the blue and liver are considered to be serious faults and the all-white is grounds for instant disqualification from showing in conformation at All Breed and Specialty Shows. (Source: Wikipedia.org, CC BY-SA)