Smuckers announced a voluntary withdrawal of specific shipments of its dog food brands due to contamination with the euthanasia drug pentobarbital, following independent testing that showed high levels of the substance in Gravy Train products. The company attributed the contamination to a single unnamed supplier and assured that trace amounts of the drug are considered safe for pets, although the presence of pentobarbital violated their quality standards. This incident is part of a larger ongoing concern regarding the use of euthanasia drugs in pet food, prompting scrutiny from consumer advocacy groups and the FDA.