The Rottweiler is a good sized, strongly-built active dog. Recognized by the American Kennel Club on April 9, 1935, the Rottweiler breed is affectionate, intelligent, easily trained to work, naturally obedient, and extremely faithful. While not quarrelsome, he possesses great courage and makes a splendid guard dog. His demeanor is dignified and he is not exitable. The coat on a Rottweiler should be short, course and flat. The undercoat should not show through the outer coat. A full grown rottweiler can reach 135 pounds in weight, however most are smaller. Height at the withers ranges from 22 to 27 inches. Read more about the Rottweiler dog breed on our Encyclopedia page by clicking here.