Canine freestyle: where humans and dogs do-si-do for fame and glory and wear cool costumes. In the growing sport, human and dog become a dancing duo, dress in over-the-top costumes and show off their fancy footwork using all six of their legs to songs of all genres, from country to disco to classical masterpieces. The sport has invaded canine culture in America, including doggie daycares, kennels and boarding facilities. Dog owners and their pets don't cut the carpet just for exercise. Many try to perfect their routines to win competitions around the nation and worldwide. Colorado will be the site for two competitions this year being held by the World Canine Freestyle Organization, including the group's international titling contests that will take place in July.