Diamond Pet Foods has reported a total of 21 cats with thiamine deficiency in Pennsylvania and New York since a voluntary recall of two brands of the company's dry cat food in September.
The updated announcement involves a Diamond recall of Premium Edge Finicky Adult Cat and Premium Edge Hairball Cat brands of
dry food distributed in 18 states.
All 21 cases came from New York and Pennsylvania.
Diamond initiated the recall after pet owners and veterinarians reported cats exhibiting neurological symptoms that pointed to thiamine deficiency.
Company testing confirmed the deficiency. Diamond asked retailers to pull the product from shelves, and asked pet owners to stop feeding the food at once and take potentially affected pets to a veterinarian.