I LOVED tracking! Did through TDX level years ago with a super Lab/GSD cross named Saint. It was wonderful. Try www.akc.org, and look up dog clubs, tracking and maybe also obedience in your area. They're listed by state. If you can't find one close, try the closest ones, contact them (a contact person will be listed), and I'll bet they can help hook you up with partners for practice, classes or seminars to learn, and a judge to certify your dog when ready for a test. Have a GREAT time. You have the perfect breed for it.
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Kathy Diamond Davis, author, "Therapy Dogs: Training Your Dog to Reach Others," 2nd edition, and the free Canine Behavior Series articles at http://www.veterinarypartner.com/Content.plx?P=SRC&S=1&SourceID=47