My dog has been identified as a "pitbull type" so is obliged to wear a muzzle in public, in the UK. I must have tried at least 8 muzzles, but nothing I found was exactly right for her. Then I came across the "fordogtrainers" site. With the many measurements required and several different styles, I at last felt I would get it right. And I did! She now has a wire muzzle that fits perfectly and allows her freedom to pant, drink, and accept treats. Very pleased.