"Breed popularity" refers to how well-known and desired a particular type of animal breed is among people. It indicates the level of interest and demand for that breed. Full definition
Another way to look at breed popularity is to look at a list of how many breeders there are for a given breed. (cat-lovers-only.com)
As I said above, and as the two later posts seem to agree with in principal, is that breed popularity needs to be a factor in shows. (dogingtonpost.com)
In its annual report on breed popularity in the U.S., the American Kennel Club notes that, while the Labrador retriever is again the most popular dog breed, other large breeds are quickly moving up the list, including Dobermans, giant schnauzers and Great Danes. (ohmidog.com)