Other
The American Rottweiler Club
This club is recognized as the national breed club. They provide information concerning the breed including general information, health issues, training and behavior, activities for you and your Rottweiler.
American Kennel Club
American Kennel Club: Rottweiler Breed Standard
The American Kennel Club lists the Breed Standards for Rottweiler such as general appearance, size, proportion, substance, and temperament.