The Doberman Pinscher’s tremendous strength means they can end up taking you for a walk! Their lead should be strong and a harness, rather than collar, makes it easier to rein them in when they need to be. Bred as guard dogs, the Doberman Pinscher is very loyal and intelligent, but they need lots of exercise and also mental stimulation in the form of games and toys to ensure they are happy and calm. Alpha from the animated movie UP is a Doberman Pinscher.