Menu Foods has again expanded its recall of wet cat and dog food -- this time over the possibility of cross contamination.

The Mississauga, Ont.-based company recalled about 60 million cans and pouches of pet foods in March. The food was produced with adulterated wheat gluten supplied by ChemNutra Inc.

Menu Foods is now expanding the recall to include products which do not include ChemNutra wheat gluten -- but were manufactured at any of the Menu Foods plants during the period that the ingredient was used there.

"Menu Foods has received a report from a customer and has received study results, both of which indicate cross-contamination," the company said in a release issued on Wednesday.

Additional items have been added to the recall in Canada, the United States and Europe.

Menu Foods estimates that the additional recall represents less than 5 per cent of the products that have already been recalled or withdrawn. The company has also revised its estimate of the out-of-pocket costs for the total recall to be from $40 million to $45 million.

An updated list of the recalled products, including this addition, is available at the Menu Foods .