(CNN) - For all the headaches on the campaign trail, you would not think a candidate would be hounded by his own dog.
That, however, has been the relentless fate of Republican contender Mitt Romney. A trip to Canada 30 years ago with the family pooch in a car top carrier, has been the gift that just keeps giving to Democrats. They've lampooned him as cruel at worst, foolish at best, with bumper stickers and T-shirts that say "Dogs aren't luggage!" and "Mitt is Mean!"FULL STORY