The perfect holiday gift: a robo-pet

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You don’t have to change their litter, but their batteries are another story. These cuddly little bundles of wire are the perfect pet for owners who want to avoid the piddle and still embrace the fluff. SlateV.com reporter Daniel Engber takes this year’s most popular robo-pets for a walk.

My favorite: Pleo the Dinosaur.

-- Graham McCann