During this time, the land spaniels became a bit more specialised and divisions among the types were made based upon weight. According to the 1840 Encyclopedia of Rural Sports, Cockers were 12–20 lb (5.5–9 kg). Both males and females of the breed weigh approximately 13–14.5 kilograms (29–32 lb). American Cocker Spaniels are smaller, with the males being on average between 14.25 and 15.5 inches (36.2 and 39.4 cm), and females again being smaller on average at between 13.5 and 14.5 inches (34 and 37 cm), both weighing approximately 11–13 kilograms (24–29 lb). However English Cockers also tend to have longer, and lower-set ears than English Springers. In addition Springers also tend to have a longer muzzle, their eyes are not as prominent and the coat is less abundant. English Cocker Spaniels in UK and USA/Canada have an average lifespan of 11 to 12 years, which is a typical longevity for purebred dogs, but a little less than most other breeds of their size.
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