▁C ocker ▁Span iel ▁was ▁registered ▁with ▁the ▁American ▁Kenn el ▁Club ▁( AK C ). ▁A ▁national ▁bre ed ▁club ▁was ▁set ▁up ▁three ▁years ▁later ▁and ▁the ▁dog ▁considered ▁to ▁be ▁the ▁father ▁of ▁the ▁modern ▁bre ed , ▁Ch . ▁O bo ▁II , ▁was ▁born ▁around ▁this ▁time . ▁By ▁the ▁ 1 9 2 0 s ▁the ▁English ▁and ▁American ▁vari eties ▁of ▁C ocker ▁had ▁become ▁notice ably ▁different ▁and ▁in ▁ 1 9 4 6 ▁the ▁A K C ▁recognized ▁the ▁English ▁type ▁as ▁a ▁separate ▁bre ed . ▁It ▁was ▁not ▁until ▁ 1 9 7 0 ▁that ▁The ▁Kenn el ▁Club ▁in ▁the ▁UK ▁recognized ▁the ▁American ▁C ocker ▁Span iel ▁as ▁being ▁separate ▁from ▁the ▁English ▁type . ▁The ▁American ▁C ocker ▁was ▁the ▁most ▁popular ▁bre ed ▁in ▁the ▁United ▁States ▁during ▁the ▁ 1 9 4 0 s ▁and ▁ 1 9 5 0 s ▁and ▁again ▁during ▁the ▁ 1 9 8 0 s , ▁reign ing ▁for ▁a ▁total ▁of ▁ 1 8 ▁years . ▁They ▁have ▁also ▁won ▁the ▁best ▁in ▁show ▁title ▁at ▁the ▁West min ster ▁Kenn el ▁Club ▁Dog ▁Show ▁on ▁four ▁occasions , ▁the ▁best ▁in ▁show ▁title ▁at ▁Cru ft s ▁in ▁ 2 0 1 7 , ▁and ▁have ▁been ▁linked ▁to ▁the ▁President ▁of ▁the ▁United ▁States ▁on ▁several ▁occasions , ▁with ▁own ers ▁including ▁Richard ▁N ixon ▁and ▁Harry ▁S . ▁Tr uman . ▁ ▁In ▁ 2 0 1