Sadie, a 6-year-old yellow Labrador retriever, leaps off a dock as her owner, Sandra Youngman of Aurora, throws a toy. At the Dock Dogs competition at the Four Corners Pet Expo on Friday, dogs competed for distance while leaping into a water tank. The expo continued from 10 a.m. to 3 p.m. Saturday and Sunday at the La Plata County Fairgrounds. The event is a production of Four Corners Expos, a division of Ballantine Communications Inc.