What is 3 headed doberman?

I'm sorry, but there is no such thing as a three-headed Doberman. It is a mythical creature and does not exist in reality. Dobermans are a breed of dog that typically have one head, two ears, and two eyes. They are known for their intelligence, loyalty, and protective nature. Dobermans are often used as guard dogs, police dogs, and search and rescue dogs due to their strong work ethic and trainability.