One of my father in laws dogs, might have been his last one, got old and sick. The dog was at it's end. One day, my father in law got up to go outside, and when he opened the door, the dog ran out and would not return when called. The dog just disappeared. The dog had NEVER done that before.
My father in law went a searching and somehow was able to find the dog. The dog had crawled deep into a briar patch, laid down and died. My father in law tried to get the dog's body out but could not get past the briars. It really bothered my father in law that he could not retrieve the dog and bury him. I told him the dog did not want to mess up his den, aka the house, and the dog did what he thought best for his pack. Let him stay in the place HE picked to die. The dog was looking after it's pack.
Later,
Dan