...instinct of Rotts, Dobes etc

My neighbors chihuahua will rip you apart like a pack of hyenas on a recent kill!He's a little dog but takes no crud from anyone! He's fast & furious. He's a sweetie when you get to know but but a vicious little guard dog. Takes on big dogs, small dogs, humans...makes no difference to him.They even bought him a little spike collar

Well, that's fairly simple. If you don't want a full size Doberman, get a mini. That's what we own, and I will tell you, she acts like she owns the place. She is VERY protective, and guards our house. She never bites ANYONE and is still the very loving baby she is. They are fantastic with children too. The price tag on them isn't that pretty. Trust me. But she was worth it.