Every once in a while, I will set Rugby's high jump at 12 or 8 instead of his usual 10 inches. It helps Rugby approach the jump confidently even if it isn't set correctly at a show, or if it is replaced by a certain English Mastiff. I didn't measure Sherpa, but laying down she is 12-13 inches high. Rugby was so pleased with himself for successfully jumping Sherpa that he celebrated for several minutes! Smart boy!