Calvin was a Stratford terrier mix that was rescued from a puppy mill that I adopted when I was younger after I fostered him for three weeks and I loved him so much not to let him go. He was a sweetest little guy he died at the age of fourteen. He once saved my car from being robbed he barked and alerted me in the middle of the night to show me a man breaking into my car and I put him on a leash and he scared the guy off and he left my car. He had broken my window and I called the cops and insurance fixed my car for no fee. I owe that dog so much he saved me a few times from people and he was not violent just protective. He died from cancer I couldn't deal with him having the pain so I had to put him down and now he is in heaven happy and running around rip big guy...