The Wako are tsawekuri, animal spirits in the folklore of the Cuiva of Colombia and Venezuela. They look like pacas, with spots and long vicious fangs. Wako dig caves with many small exits and hiding-places, and live there in large numbers. Their call sounds like ao, ao, ao, ao.
Wako are carnivorous and anthropophagous. Anyone who ventures into their caves is hunted down and devoured. However, they refuse to chase anyone who is naked.
A Cuiva man who was left by his wife once made the suicidal decision to dig into a wako nest. Despite his son’s entreaties, he dug into the hole where a wako had been seen, feeling around with his hand and pulling it out quickly. His actions startled the wako, who ran out of their burrow calling ao, ao, ao, ao. There was nothing left of him after they were done.
Another man descended into a wako cave to avenge his pregnant wife, who had been eaten by the wako. He successfully exterminated the entire nest of wako.
Arcand, B.; Coppens, W.; Kerr, I.; and Gómez, F. O.; Wilbert, J. and Simoneau, K. eds. (1991) Folk Literature of the Cuiva Indians. UCLA Latin American Center Publications, University of California, Los Angeles.