When the UK Kennel first accepted registrations for the breed in 1919, fifty-four dogs were registered and by 1926 this number had grown to over 8,000.[42] The breed first gained international recognition after the decline of World War I; returning soldiers spoke highly of the breed and animal actors Rin Tin Tin and Strongheart popularised the breed further.[50] The first German Shepherd Dog registered in the United States was Queen of Switzerland; however, her offspring suffered from defects as the result of poor breeding, which caused the breed to suffer a decline in popularity during the late 1920s.[50]
Popularity increased again after the German Shepherd Sieger Pfeffer von Bern became the 1937 and 1938 Grand Victor in American Kennel club dog shows, only to suffer another decline at the conclusion of World War II, due to anti-German sentiment of the time.[50] As time progressed, their popularity increased gradually until 1993, when they became the third most popular breed in the United States. As of 2012, the German Shepherd is the second most popular in the US.[50][51] Additionally, the breed is typically among the most popular in other registries.[50] The German Shepherd Dog's physique is very well suited to athletic competition. They commonly compete in shows and competitions such as agility trials.