The purebred whippet should not exceed the requirements of height 20inches to the top of the withers ....however, having said that my pure stud whippet bow stood 21 inches and his ideal running weight was 34 ibbs.he was very carefully put to well balanced Irish greyhounds in order of me breeding a true to type longdog hybrid...bow was a fantastic dog and literally dozens of running dogs were brought to him.luguna blood is relatively quiet old but it still exists. Carl Williams