It is said that the creature had the face of a Japanese monkey, the trunk of a raccoon dog, the limbs of a tiger, and the tail of a snake (some documents do not mention the trunk, and other documents describe that the creature had the trunk of tiger), and generated quite eerie 'hyo, hyo' sounds similar to the voice of golden mountain thrushes.発音を聞く 例文帳に追加

ニホンザルの顔、タヌキの胴体、トラの手足を持ち、尾はヘビで（文献によっては胴体については何も書かれなかったり、胴が虎で描かれることもある）、「ヒョーヒョー」という、鳥のトラツグミの声に似た大変に気味の悪い声で鳴いた、とされる。 - Wikipedia日英京都関連文書対訳コーパス

According to the classical encyclopedia "Shukaisho," 'Hyakki-yako days,' the days when a hyakki yako appears, were on the New Year, the day of the Rat in February, the day of the Horse in March and April, the day of the Snake in May and June, the day of the Dog in July and August, the day of the Ram in September and October, and the day of the Dragon in November and December (old calendar), so people used to avoid going out at night on those days because it was said that they would die if they came across a hyakki yako.発音を聞く 例文帳に追加

古典の百科全書『拾芥抄』によれば、正月、2月子日、3月・4月午日、5月・6月巳日、7月・8月戌日、9月・10月未日、11月・12月辰日は百鬼夜行が出現する「百鬼夜行日」であり、百鬼夜行に出遭うと死んでしまうといわれたため、これらの日には夜の外出を控えたという。 - Wikipedia日英京都関連文書対訳コーパス