Japan Pet Food Association conducted a survey of pet cats. According to it, common cats are mixed breeds. Among total 1214 dogs kept as pets, 79% of them are mixed breeds.
Figure : Percentage of Popular Cat Breeds in Japan, 2015 (unit : %, n=1214)
Source is Japan Pet Food Association.
www.petfood.or.jp/data/chart2015/index.html (猫 飼育・給餌実態)