Remember - those shown on the websites are NOT the only ones they have. Best to go and look for himself. Never know when "the one" will catch your eye.
Don't forget all of the local rescue organizations too. Can find most of them at Pet adoption: Want a dog or cat? Adopt a pet on Petfinder. Fill in the information on the left hand side. Can just search on "dog" and zip code for those close or put in specific information such as size, age, breed, etc.