From herding sheep to pulling sleds to bringing down criminals, dogs have worked for humans since they were domesticated a long time ago. It's a win-win situation, since the dog receives room and board for life, plus the satisfaction of pleasing his boss. That's not much of a factor for cats, who are mostly employed in pest control. Still, every once in a while we find a cat or dog who is gainfully employed in some activity that surprises us. Here are some of those hardworking dogs and cats
in an article I posted at mental_floss.
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