A natural pet food products and supplies producer based in Green Cove Spring has filed for voluntary Chapter 7 bankruptcy protection two years after it was acquired by a local investment group. PetGuard Holdings LLC filed Dec. 31 in the Middle District of Florida and is represented in court by attorney Bradley R. Markey. PetGuard Holdings LLC, which is based in Sewickley, Pennsylvania, listed assets up to $290,455 and debts up to $3,179,597. The filing's largest creditor was listed as Valley National...