My wife said our dog was in the same spot for the last three hours. I approached him and he hardly moved. His eyes followed me so I knew he was still alive. I was afraid I would wake up the next morning and he would be dead. I found out in the middle of the night he was no longer there. I was thrilled: that was a good sign. Even the biscuit that had been lying untouched by his mouth was gone. He is twelve years old and still manages (despite his arthritic knees) to run to the other side of the yard. He may have gotten old all of a sudden. He was in the yard today not in a prone position but slightly sitting up. It is summer and our four dogs are not that perky. I love Pax but no pet lives forever. I would really miss him.