Bakeneko

Bakeneko originate in Japanese folk belief as transformed domestic cats; the compound name literally marks them as 'changed' or transformed cats. Sources describe a broadly held idea across regions that aged or long-kept cats may become bakeneko after a threshold number of years in a household, with local variants placing that threshold at twelve years (Ibaraki and Nagano), thirteen years (Kunigami District, Okinawa), or seven years (Yamagata District in Hiroshima, where lore adds that a cat kept that long may kill its keeper). The tradition sits alongside other animal-transformative yōkai (kitsune, bake-danuki) and has been used narratively to explain unsettling domestic misfortunes and to encode moral commentaries about mistreatment of animals.

There is no single fixed physical description in the sources; bakeneko are essentially cats that can appear catlike or take on human form. Folklore emphasizes transformation rather than a uniform body plan: some tales describe cats standing on their hind legs or wearing human garments (for example a cat-like monster appearing in a mother's clothes in the Takasu Genbei tale), and other accounts stress that the bakeneko is normally a one-tailed transformed cat — a contrast often drawn with the related nekomata, which is commonly said to have two tails. Visual motifs such as a cat lit from below by lamp light while standing on hind legs contribute to the eerie image associated with them.

Collected traditions attribute a variety of uncanny powers to bakeneko. They are said to shapeshift into human form and to don or mimic human clothing and actions (dancing with a towel or napkin on the head is a recurring motif). Stories credit them with speaking human words, cursing or taking revenge on cruel people, possessing or manipulating living humans, and even manipulating the dead. Folk narratives also associate them with small household thefts (licking or stealing lamp oil) and with prowling behaviors that may endanger travelers in remote areas. These abilities are presented variably across regional tales rather than as uniform, codified powers.