Very Aggressive Great Dane
I have a 2 year old great dane, and she is very protective and aggressive especially to other dogs. She runs out of the house if the door isn't shut all the way and she will run straight to a dog that is outside. She will bite at it for no reason and attack it and has punctured a dogs in there chest.
She does show lots of love to me and the kids and loves to snuggle and play with us. but outside she tries to attack any dog that is out even when we are out walking. I don't want to take her out for walks or anything. We have her mom a 6 year old dane and she isn't as aggressive but has started to become aggressive as the puppy is getting more so. I really need to know how to control her. We love her and don't want put her down because of this aggression .. please help..