Dry dog food manufacturers are continuing to recall bags of food due to high levels of aflatoxin.

Yet another manufacturer has announced a recall of dry dog food due to higher than acceptable limits of aflatoxin, and an additional manufacturer has issued new affected lot numbers from an earlier recall this month.

The recalls began Dec. 7, 2011, when Cargill Animal Nutrition announced it was removing batches of its dry dog food (River Run and Marksman) from store shelves because of elevated levels of aflatoxin.

Since then, Proctor & Gamble (Iams puppy food), Advanced Animal Nutrition (Dog Power food) and now O’Neal’s Feeders Supply (Arrow Brand dog food) have all recalled batches of their dog food within the last three weeks.

O’Neal’s Feeders Supply of DeRidder, LA, announced Dec. 13, 2011 that it has recalled an entire year’s worth of dry Arrow Brand dog food due to corn with elevated levels of aflatoxin. The recall affects food manufactured between Dec. 1, 2010 and Dec. 1, 2011.

The recall applies only to dog food distributed throughout Louisiana and Texas with packaging date codes 4K0341 through 4K0365 and 04K1001 through 4K1325.

The affected products include:

Cargill also announced updated lot numbers for its original Dec. 7, 2011 recall, which now extends the recall to include bags of Petrus dog food.

In a Dec. 14, 2011 update to a previous news release, Petrus Feed and Seed Stores announced a recall of its 21 percent Protein Dog Food, manufactured at Cargill’s manufacturing facility. The recall affects 40 lb feed bags of Petrus dog food manufactured at the Cargill facility between Dec. 1, 2010 and Dec. 1, 2011.

The products affected include lot numbers 4K1011 through 4K1307, distributed only in Petrus Feed and Seed stores in Alexandria, LA.

Consumers may return the recalled dog food (in opened or unopened packages) to the place of purchase for a full refund.

No adverse health effects have been reported in combination with consumption of the foods.

Aflatoxin is a naturally occurring mold by-product that can cause potentially fatal liver damage in animals if consumed in high amounts. In 2006, spoiled dog food containing corn caused an outbreak of aflatoxin poisoning and resulted in the death of over 100 dogs, according to Cornell University.

Under FDA standards, the naturally occurring mold by-product aflatoxin cannot exceed 20 parts per billion.