Nekomata

The nekomata's earliest attestation in Japanese writing is not, as sometimes stated, Yoshida Kenko's Tsurezuregusa (Essays in Idleness), compiled in the fourteenth century, but an entry roughly a century earlier in the courtier Fujiwara no Teika's diary Meigetsuki, dated to 1233, describing a man-eating nekomata at Nanto with the eyes of a cat and the body of a dog. Tsurezuregusa's later passage, portraying a creature of the deep mountains dangerous to travellers and distinct from the household cats familiar to the essay's readers, may be the earliest surviving literary use of the name itself, but the Meigetsuki entry is the older and more reliably dated record of the creature. Both early references treat the nekomata as a mountain predator, genuinely feared rather than merely uncanny, closer to the other man-eating mountain monsters of the period than to the household hauntings later folklore prefers.

Later Edo-period (seventeenth to nineteenth century) sources shift the setting decisively indoors. In this later tradition, the danger is not a monster living apart from human society but an ordinary pet, one kept too long, whose forked tail marks the exact point at which its true nature emerges; some households are said to have limited how long a cat could be kept, or docked a cat's tail, specifically to forestall the transformation. This domestication of the legend, moving the nekomata from mountain wilderness into the family home, is one of the clearer examples in Japanese yokai folklore of a creature's character shifting to match the anxieties of the period recording it.

Nekomata and bakeneko are frequently used as if interchangeable, and a great deal of popular writing on Japanese folklore treats them as simple synonyms, but the more careful folkloric distinction, where it is drawn at all, separates them along two lines: bakeneko is the broader umbrella term for any supernatural cat, defined mainly by longevity and general shapeshifting ability, while nekomata is specifically the variant with a forked or split tail, a physical marker bakeneko does not require. Bakeneko is also more consistently the household variant, while nekomata carries the older association with mountain wilderness, though later sources increasingly apply both terms to a housecat grown old and strange.

This atlas records the two under a shared Cat Spirits heading rather than merging them into one entry, on the same reasoning it applies elsewhere to closely related regional or terminological pairs: the forked tail, the mountain-versus-household setting, and the somewhat different tone of the stories attached to each, corpse reanimation and human speech clustering more heavily around the nekomata specifically, are distinctions folklorists studying yokai continue to draw even when popular usage collapses them, and an atlas recording the tradition should preserve a distinction its own sources still make rather than pre-emptively erasing it.