Marxy draws attention to Satoru Tsuda's Namaneko site. It has a large English section explaining the origin of the namennayo cats and how to take the pictures.
Almost all work is hand sewn, and it takes about 7 days to make one costume...Photographing the cats required 7-8 staffers. 2-3 staffs were assigned to put on and take off the costumes, one photographer and assistant, one to take care of accessory items and the set, while another was required to guide the kittens to pose and face the camera...The two years of success from the debut of "Namennayo" Cats in 1980 until 1982. In 1981, "Namennayo" Cats fever spread across the nation, its success can be accounted to the fact that it attracted both male and female fans
