High Quality Content by WIKIPEDIA articles! "Teso Dos Bichos" is the eighteenth episode of the third season of the science fiction television series The X-Files. It premiered on the Fox network on March 8, 1996. It was written by John Shiban, and directed by Kim Manners. The episode is a "Monster-of-the-Week" story, unconnected to the series` wider mythology. "Teso Dos Bichos" earned a Nielsen household rating of 10.7, being watched by 17.38 million people in its initial broadcast. The episode received mostly negative reviews.