History of Aggression: If your Doberman has a history of aggression towards people or other dogs, a muzzle is a must. This doesn't mean that your dog will need to wear a muzzle forever, but you should keep them muzzled until you have their aggressive behavior under control.

What dogs need to be muzzled?

Almost a dozen breeds, including German Shepherds, Rottweilers, Akitas and Pit Bull Terriers, are subject to these restrictions.

Why you should not get a Doberman?

Potential animal aggression.

Some Doberman Pinschers are dominant or aggressive toward other dogs of the same sex. Some have strong instincts to chase and seize cats and other fleeing creatures. Being able to control your Doberman's behavior with other animals is another reason for a thorough respect training program.