Pet licensing is a doggone drag, no doubt about it. First, there's digging up the dog's rabies-vaccination information, then finding the time to get down to the Denver Municipal Animal Shelter on Jason Street -- not an easy site to locate. Still, it's a worthwhile endeavor, especially since licensing fees help cover a portion of the shelter's costs, including those for adoption and vaccination programs. Last year, doing the good -- and legally required -- deed got a little easier, thanks to online licensing. Just visit, select "new" or "renew," and within five minutes, Fido and Fluffy can hit the city's off-leash dog parks lawfully.