Pet food maker Evanger's is recalling some of its dog food because it may contain a chemical used in the euthanization of animals, as well as in lethal injection. The chemical, pentobarbital, can cause dizziness, nausea, and death, and was detected in a single lot of Evanger's Hunk of Beef Au Jus product made in June 2016 and sold in Washington state. One dog died and four others fell ill after eating the food, reports NPR. It isn't clear how pentobarbital made it into the product, but Evanger's says it was "let down by our supplier," and has ended that 40-year relationship. As a precaution, it is recalling 12-oz cans from five lots with 1816E03HB, 1816E04HB, 1816E06HB, 1816E07HB, or 1816E13HB on the label. (More recall stories.)