Nekotalia originates from a strip in Hetalia manga Volume 3 and several images and webcomic strips by Hidekaz Himaruya in which the nations have cats which share similar personalities and features to them. Some of these cats are owned by the nations they represent.
However they all are referred to with “cat” following their nation’s name, seemingly to have them represent the nation as well. The term Nekotalia derives from neko, the Japanese word for “cat” and talia, from Hetalia, the name of the base series. They are somewhat comparable to Mochi in the series.
Hetalia: Axis Powers anime is a Japanese webcomic, later adapted as a manga and an anime series, by Hidekaz Himaruya
Nekotalia papercraft is designed by KimiMonsterKitty. Comes with instruction sketch by KimiMonsterKitty herself