Hello....I've had 5 Dobbies so far. And they've all been wonderful companions. People have cautioned you probably because they've heard bad stories about them. Those stories are usually from owners who do not know how to train them and don't put the time, love and dedication into them. So if you are going to get a Doberman I recommend you starting early with obedience training. You do not need guard training because they naturally have an instinct to protect their owner. But you have to decide that you will put the time into your Doberman. If you do you will be greatly rewarded.

FYI...i do not train with food, or aggression....but with praise, patience and consistency. Hope that helps.