Any spaniel under 25 lb (11 kg) was placed in the Cocker breeding pool, however the Welsh Cocker was reclassified as a Springer in 1903 due to its larger size and shorter ear. . The closely related English Springer Spaniels are larger than either types of cockers, growing to between 19 and 19.75 inches (48.3 and 50.2 cm) for the females, and 19.25 and 20 inches (48.9 and 50.8 cm) for the males, and weighing between 23 and 25 kilograms (51 and 55 lb).The English Cocker Spaniel is similar to the English Springer Spaniel and at first glance the only major difference is the larger size of the Springer. However English Cockers also tend to have longer, and lower-set ears than English Springers. Working-dog lines often have physical characteristics that would prevent them from winning in the show ring.