 We got this email from Kathleen who writes, A few years back, we had to put our chocolate lab down because she had developed bone cancer. And her best buddy, our yellow lab, would go outside and lie on top of her grave for about a week. He was sullen. He didn't eat much during that time. He eventually resumed his normal behavior. But his actions made me realize that not only were my family and I grieving the loss of one of our dogs, but our other dog was also, since he had lost...