In addition to Rin Tin Tin, German Shepherds, in general, have a reputation for being serious, brave, loyal, and intelligent. They serve as Police Dogs, Military Canines, Service Dogs, Schutzhund Champions, and Bomb Sniffers. If your Shepherd is very excitable, then you may feel disappointed or frustrated when you see other German Shepherds on TV or in real life acting so composed. Most of the German Shepherds that you see were at one time or another excitable though, especially when they were puppies and adolescents. Most Shepherds that serve in such impressive roles had to be taught to focus, obey, and tune out distractions. Even if your Shepherd will never be the next Rin Tin Tin, he probably has a lot of potential and can learn many new things once you teach him how to be calm enough to focus.