Dog’s Reaction To Owner Collapsing During Walkies. Cares As Much As A Cat

Maybe he just didn't notice.

"And still later it crept close to the man and caught the scent of death. This made the animal bristle and back away. A little longer it delayed, howling under the stars that leaped and danced and shone brightly in the cold sky. Then it turned and trotted up the trail in the direction of the camp it knew, where were the other food-providers and fire-providers."

"To Build a Fire," - Jack London

http://www.jacklondons.net/buildafire.html