Which breed of cat is that? Persian! The Persian is the most popular breed of pedigree cats in the United States. In Europe, however, it is losing its past popularity. In the UK, the Persian lost its top spot to the British Shorthair in 2001. As of 2012, it was the 6th most popular breed, behind the British Shorthair, Ragdoll, Siamese, Maine Coon and Burmese.