I noted you are in Georgia, if you are in the Atlanta area I can recommend Top Dog on Mansell Rd in Roswell. They carry Puppia harnesses and will help you fit it properly for your dog.
I had a heck of a time finding a harness that would fit Sophie properly (big head little body), I took her into Top Dog and they helped me with fitting a Puppia Harness.
Good luck and like another poster said EBay has a lot of sellers, once I figured out how which size to get her I bought additionals from an Ebay seller.
Also I was in Petco last week and they have an Puppia "type" harness they are selling. Haven't tried that one yet, so I cannot make a recommendation.
__________________ Cheryl,Mom to SophieKate |