Hamish came to us as a rescue from a home who provided little information. We have spent the past year providing socialization training and he has improved from when we first got him, but he is still aggressive towards people coming into the home and recently bit our housekeeper after being able to break open his kennel door when she was vacuuming. He is not friendly to other dogs except our elderly chihuahua and has attempted to attack dogs he meets when outside.