At a glanceAKC recognised the English Cocker Spaniel as a separate breed in 1946 after a period of variety recognition and pedigree research. The change should be distinguished from working-versus-show selection within either breed.WORKING DOG reference library · Added 2026-10-19 · Editorial guideKey factsAKC separate-breed recognition1946 [source]Dodge book published1942 [source]Separate studbook headingJanuary 1947 [source]Different types existed before separate registrationAKC’s historical account describes increasing numbers of English-bred Cockers in America and a division between fanciers favouring the smaller American type and those favouring the English type. It dates recognition of the English type as a separate variety to 1936. This means differentiation preceded the later separate-breed decision. The process was not an overnight creation of two unrelated dog populations. It involved breeders deciding which ancestry and physical type they intended to maintain, followed by changes to how the kennel organisation classified and recorded them.Pedigree research supplied an argument for separationThe history identifies Geraldine Rockefeller Dodge’s role in documenting English Cocker ancestry. Her book The English Cocker Spaniel in America appeared in 1942, followed by an AKC-approved breed standard in 1945 and separate recognition in 1946. The American Spaniel Club’s historical publication records that English Cocker registrations first appeared under their own studbook heading in January 1947. These milestones explain why a certificate, standard and studbook volume can carry different dates without contradiction. Recognition decisions and the implementation of new record headings do not necessarily occur on the same day.The separation concerns breed identity, not a field titleThe American system generally uses Cocker Spaniel for the American breed and English Cocker Spaniel for the English breed. Historical material using Cocker without a modifier therefore needs its country and date retained. Neither label alone identifies field selection, show selection or an earned hunting title. Those are additional questions about the line and the individual dog. A useful historical comparison keeps the English–American administrative separation distinct from later conversations about working Cockers within a breed, and does not erase the shared spaniel background simply because modern books place the dogs under separate headings.Common questionsIs the English–American separation the same as working versus show Cockers?No. It concerns separate registry breeds; selection for field work or showing is a further question within the relevant breed.Sources & further readingReferences for this guide. Rules and services can change; check the responsible organisation for current details.AKC: English Cocker Spaniel historical account (opens in a new tab)American Spaniel Club: historical Blue Book (opens in a new tab)Keep exploringEnglish Cocker Spaniel ↗American Cocker Spaniel ↗English Springer or English Cocker Spaniel? ↗Choosing a working dog breeder ↗Assessing a working dog before purchase ↗Health screening before breeding ↗Explore the working dog communityRecorded competition results · Find a trainer · Browse services · Dogs & litters