Which dog is Chicago's favorite?

<div class="meta image-caption"><div class="origin-logo origin-image "><span></span></div><span class="caption-text">Yorkshire terriors tied boxers as the fifth most popular dog in Chicago.[FILE- Yorkshire Terriers are shown in the ring during competition at the 137th Westminster Kennel Club dog show, Monday, Feb. 11, 2013 in New York.] (AP Photo&#47;Mary Altaffer)</span></div>
February 25, 2013 10:48:21 AM PST