Their puppyhood is critical for their psychological development.
When they become teenagers their attitude is changing. They become stronger mentally and physically.
When teenagers you will be able to direct them to their proper purpose during their lifetime.
They are suitable for any kind of Dog Training Area (Dog Sports, Obedience, Protection), or they can be the perfect family companions.
Proper socialisation has to be provided for them from early age and maintained during their lifetime.
If not managed properly, the Doberman can develop behaviour issues that will be hard to control in the future. Issues such as high nervousness or high aggressive tendencies.
Their aspect is sometimes intimidating for humans and in some cases for some dogs. Due to this reason, in many occasions the introduction to people or dogs has to be made by the owner in a calm way using obedience exercises and control measures.
A Doberman has in his genetics a multitude of hunting breeds such as Beauceron, Rottweiler, and Weimaraner.
It will really matter the breeder that will provide your puppy as their blood lines can be aimed for a certain type of behaviour.
Health and physical maintenance wise, they are easy to develop and maintain if the proper food and medication (calcium, vitamins, etc.) is provided.