Dog owners who've fed their pet the recalled product are urged to contact their veterinarian if the animal starts showing signs of sickness.
The company behind Hy-Vee dog food are urging people to stop using and return or dispose of some of its products following a voluntary recall.
Tests showed higher than normal levels of aflatoxin in some samples of ot the dog food, which is produced at a Kansas City plant.
Aflatoxin can be harmful to pets if consumed in significant quantities.
Owners with pets showing signs of illness such as sluggishness, vomiting or a reluctance to eat are urged to consult a vet.
The recalled products were distributed to Hy-Vee stores in Iowa, Illinois, Missouri, Kansas, Nebraska, South Dakota, Minnesota and Wisconsin between October 26, 2012 and January 11, 2013.
Click here to view the list of products affected.