Fancy rabbit breeds are often purchased from pet stores, private breeders, and fanciers. Pigeon fanciers developed many exotic forms of pigeon. There is debate among fanciers whether there are two separate breeds of Akita. The association brings together over 40,000 pigeon fanciers. There have been several portrayals of pigeon keeping and pigeon fanciers in the arts. There is controversy among rat fanciers in regard to selective breeding. Home aviaries are popular with some bird fanciers who have the space for them. A high collaboration with pigeon fanciers from Belgium, the Netherlands and Germany is also observed. The work and practices of farmers, animal fanciers, cowboys, and zoologists may be displayed. The Persian cat was developed from Turkish angora mutations by British and American cat fanciers. In Pakistan many fanciers and associations organize endurance competitions. Among rabbit fanciers, the genetics of rabbit health and diversity are paramount. Fliers are occasionally kept in aquaria by North American native-fish fanciers. The greyer undercoat is less desirable to fanciers. The result was a disaster for the show fanciers.