Rufus, the Cowardly Hero

My husband and I rescue dogs. Rufus was one of our rescues. We rescued Rufus when we were first married. Since we don't have children, Rufus was our loved child. We loved him from the first moment we saw him. Little did we know when we adopted him how big he would get. Rufus grew to be a 150 lb. big goof ball of a dog who was afraid of everything. It didn't matter that he was a big coward, we loved him any way. So how did this big coward of a dog turn into a super hero that saved my life?