This thread was started on the GSD board and the stories are amazing. I thought I would toss it over here for something heartwarming to talk about on a nice Friday/weekend. What is a heart dog? How is he/she different from any other dog you've cared for? What has your heart dog taught you? When did your heart dog enter your life? Was it a low point in your life? Did your heart dog leave you at a high point in your life? Or is your heart dog still with you?