Tiangou

The tiangou resembles a black dog or meteor, and is thought to eat the Sun or Moon during an eclipse.

According to the legends, as an interpretation of a lunar eclipse, after Houyi shot down the nine Suns in the sky, he was awarded with an immortality-granting pill by the Queen Mother of the West.

Seeing this, a black dog that Hou Yi was rearing went inside her room and licked the remains of the pill.

Surprised to see that the dog was actually Hou Yi's, she assigned him to guard the gates of heavens and bestowed upon him the title of Tiangou.

Zhang Xian (Chinese: 張仙; pinyin: Zhāng Xiān) is the enemy of the tiangou.

A tengu is usually depicted as a bird or man with a long nose and other bird-like characteristics, while the tiangou is a dog.