First question would be if he's been to the vet. I'd assume he has been and has tested healthy since you've had him for a couple months already and still needs puppy shots.
If it were behavioral I'd recommend puppy classes. Puppy classes are great and a must for doberman pups (all dogs really should have them). Does he wine when he is away from you, with you, all the time? A lot of dogs whine in the car, whine when they want to go out, etc.
If it were behavioral I'd recommend puppy classes. Puppy classes are great and a must for doberman pups (all dogs really should have them). Does he wine when he is away from you, with you, all the time? A lot of dogs whine in the car, whine when they want to go out, etc.