[16] In 1985 11 Piki no Neko Marathon Taikai won a special mention at the BolognaRagazzi Awards.

[17] The International Federation of Library Associations and Institutions (IFLA) requested the Children and Young Adults Section of the Japan Library Association to select ten books "which have been read by many children over many years" in Japan.

[1] Group TAC adapted the two first book of the series into anime films: the first was released on July 19, 1980, and the second on August 27, 1986.

[18] The first one was directed by Shiro Fujimoto and the second by Tameo Ogawa, while Yoshitake Suzuki wrote the screenplay for both versions.

[23][24] In 1969, Hisashi Inoue adapted the book into a puppetry show with musical composition by Hiroshi Aoshima that was broadcast by NHK.