Three years ago, we rescued Genevieve, our 30 lb. Shepherd mix, from a local no-kill shelter, Southern Animal Foundation, when she was 9 months old. The shelter had found her tied to their front door; the workers said that she was the worst-looking dog they had seen alive. During her first few months with us, Genevieve was terribly frightened and passive. Gradually, this passivity turned to aggression: first with food, then being touched in certain areas, then with strangers in the house, then with people who walked by us in the neighborhood. She bit my husband and me though, luckily, she never got anyone else.