Ruess (cq), a seven-year-old Chesapeake Bay Retriever chases down rocks thrown in Emigration Creek at the mouth of Emigration Canyon by his owner Lindsay Ermidis of Salt Lake City Thursday May 15, 2008. Ermidis said the two and her other Chesapeake Bay Retriever Daphne (not pictured)hit the dog parks and streams a couple time a week to let the dogs play and excercise. 5/15/2008 Jim Urquhart/The Salt Lake Tribune