i looked at this in more an apocalyptic setting, and in that regard i would have to think about which is more beneficial there, a 97 year old woman that would probably die shortly after or a rescue dog of some sort? a similarly aged person who is trained in survival or some cat that will only just eat me after i die? i mean i can never look at these life and death situations without thinking of bigger details, because i will always weigh the different variables against each other, but if you want to talk complete random human, or my current pet which is just a cat? well im sorry Minny, but you couldn't turn around and save my life, the human could.
it seems that most ppl would save their dog, and i guess i can understand that, but what if, the stranger is the opposite sex, the world is ending and you could be the ones that have to restart the human race? would you save your dog and die as the last human in existence?