Marco van den Boom installs a wheel of a medical roll car for French bulldog Billy at the headquarters of 'Rehatechnik fuer Tiere' (medical engineering for animals) in the western town of Witten ... more 
Marco van den Boom installs a wheel of a medical roll car for French bulldog Billy at the headquarters of 'Rehatechnik fuer Tiere' (medical engineering for animals) in the western town of Witten November 9, 2012. Four-year old Billy, whose hind legs are paralyzed since birth, ran for the first time on Friday with the aid of the roll car. 'Rehatechnik fuer Tiere' owner Marco van den Boom, custom builds a range of roll cars for disabled or infirm dogs and animals, to help aid their mobility or paralysis needs. REUTERS/Ina Fassbender less 
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Fri, Feb 15, 2013 10:00 AM EST