Koby, an 8yr old Dachshund, is a special dog. I got him when I was 10/11, and simply didn't train him right. He is socially anxious, aggressive towards other animals (does well with dogs), kids, and with strangers. (He does well with guests if given a treat from them). Due to his age, he's developing cataracts and is hard of hearing. He also has a benign tumor on his leg, causing him to have a ...