Thriving under our noses, but stealthily: coyotes
Scientists have long thought coyotes intently avoid cities, but a new study has found the opposite. Groups of the historically maligned dog relatives are thriving in some large U.S. cities: they lurk in darkness and come out at night, probably helping the human inhabitants by eating vermin, the study found.

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This study was done in and around Chicago. I see coyotes around, but they are near our home in the boonies, not near my office in downtown Chicago. Or maybe I don't notice them because they dress better when they go downtown.