When you gather 2,500 dogs in one spot, what happens? The Westminster Kennel Club Dog Show is like a cruise ship for canines -- a big crowd in a confined space, all waiting to eat. Once again, intrepid Siberian Husky Chuchi's Yuki kept an exclusive journal for Couch Slouch on his four-legged week in New York: Wednesday: This is our Daytona 500, our U.S. Open, our Kentucky Derby -- where's Costas or Jim Nantz? . . . Worst thing about the dog-show circuit? Flying in the cargo hold. . . . If I were king for a day, you wouldn't...