There are over 170 dog breeds recognized by the American Kennel Club but most have never gone through a popularity boom. Nine breeds have experienced a popularity "boom/bust" cycle lasting around 27 years in total. In a few cases, these popularity boosts have been caused by a movie (e.g. Disney's Big Red caused the Irish Setter fad) but in most cases the fad was sparked by people following a new trend (also seen with baby names, music and even Neolithic pottery styles).
Herzog, Harold, Viruses of the mind: The Great Irish Setter Epidemic of 1963. (2020), 'Animals and Us' Blog Posts, Psychology Today, 31 March, 112. https://www.psychologytoday.com/us/blog/animals-and-us/202003/viruses-the-mind-the-great-irish-setter-epidemic-1963