Boi-tata
From Wikipedia, the free encyclopedia
Boi-tatá [Boytata] is a monster from Brazilian folklore. Regionally it is called Boitatá, Baitatá, Batatá, Bitatá, Batatão, Biatatá, M'boiguaçu, Mboitatá and Mbaê-Tata, this last variation being the etymological form meaning fiery serpent in the Tupi language.
It has great fiery eyes, by day almost blind, but by night, it sees everything. According to legend, Boi-tatá was a big serpent which survived a great deluge. To save itself, it entered a cave and rested in the darkness for centuries, so that its eyes grew. After it left the cave, it went through the fields looking for the bodies of animals to eat, but also sometimes attacked people and animals. Mboitata is the same phenomenon as the Will o' the wisp.