Well, Casey earned his CD (yeah!!). We still have work to do on heeling, but I'm enjoying starting to teach the open exercises. He seems to hate retrieving a dumbell. I've tried to season it with peanut butter etc. but he just runs up and touches it and then runs back to me. He's made a few attempts to bring it halfway back, then just comes to front. He does seem to know I want him to do something with the dumbell, but doesn't like it in his mouth. He retrieves balls etc., although never right to me--drops it about a foot out. Suggestions??