InuYasha S01 E91 The Suspicious Faith Healer and the Black Kirara

Kuroro, who is part of Kirara's species except with more black markings, once belonged to a village. She is considered a highly intelligent youkai who helps the village by exterminating all the rats and mice there. She was chased out, though, when a spiritualist person came and said that two-tailed cats were bad fortune.