Béziers, France: Anybody who has visited France’s beautiful old cities knows you must spend as much time looking where you step as you do admiring the sites, lest you trod in dog poop —- a walk  you could call the ‘dog-crap-shuffle.’

The mayor of the southern French city of Béziers is fed up with dog owners who don’t clean up after their pets have relieved themselves on the city’s sidewalks. He announced on Friday he is calling on science to find and fine the culprits’ owners.