Nekomata

is the name of a mythological Japanese being. It is distinct from a bakeneko, which generally has powers akin to a kitsune or tanuki. Japanese folklore says that nekomata looks like a domestic cat, but they have twin tails instead of just one.

As it said in the anime, most people resent the nekomata because they are thought to be evil. Kirara and Kuroro are two examples of nekomata.