I remember reading about a cat who jumped out of her carrier and onto the tracks in late January. I figured there was no hope of the owner ever finding her. Well, it turns out she was found 25 days later, not much the worse for wear. I'm guessing her diet consisted mostly of mice and rats as she wasn't severely malnourished or dehydrated. Amazing what survivors animals are. A human under the same circumstances probably wouldn't last a week.