A pug-sitter must be ever on the alert. For example:
Pablo poops twice a day. Ideally and usually, this means once during his morning saunter through the neighborhood and once again that evening. Occasionally, he foregoes his morning poop. Woe betide the pug-sitter who neglects to bring two poop bags on that evening’s walk! A sad sight to see as, praying no householder is watching, she and the pug slink away under cover of darkness, leaving the damning evidence of her lack of foresight behind.