My dad had to put his beloved dog Dusty to sleep today. My mom cried and got it out of her system yesterday, but he's inconsolable. Dusty was only 8, she had kidney failure. I don't know what to say to either of them, they are old now and have lost a lot of family to natural causes over the last few years. They are too old to buy a new dog. They have another dog, Julie, and Julie is fine, but my dad was really attached to Dusty, she reminded him of Penny which was a dog he had when he was a teen. My dad has few friends, the dog was basically his only friend. What can I do, I hate to see him suffer. Should I just let him grieve and stay out of his way?