Bow-wowzers! 2500 entrants representing 165 breeds and varieties of pooches      compete for the coveted title of Best in Show in this popular annual event       staged in Madison Square Garden in 2007. Host Lester Holt and dog aficionados    David Frei and Debbye Turner give insight during the four hours of judging. No puppy love here, as the competition growls with drama in this dog-eat-dog      USA---2007---240 mins.