On Aug. 7, the Department of Justice filed a lawsuit seeking to permanently stop Tukwila-based Arrow Reliance Inc., which does business as Darwin's Natural Pet Products, from producing and selling pet food. Regulators said its uncooked products were repeatedly contaminated with dangerous bacteria, including one case linked to a 4-year-old child's serious E. coli infection, KIRO 7 reported. Here's what to know According to a civil complaint cited…