My dog went missing monday night. He is an inside dog so he didnt have a collar on. He was almost 5 years old. I've had him since he was a puppy. As each day passes my hopes for him returning are fading. During the time I spent with my friend it became a significant and constant part of my life. I am now experiencing intense grief and depression over the loss of my friend. I don't know if he will ever come back.