An additional recall was announced Monday by the Food and Drug Administration for certain dry feed brands.
The recall states that the affected brands contain too much vitamin D.
The vitamin is essential for dogs too much vitamin D can lead to serious health problems or even death.
"FDA scientists have evaluated samples of some of these products, and government and private laboratory tests show that the food contained about 70 times the intended amount. The amount of vitamin D," the FDA said.
The extended recall occurs about a month after Natural Life and Nutrisca dog food brands have issued voluntary callbacks.
Other brands now under recall are Sunshine Mills, Lidl's Orlando Brand and Kroger The FDA believes the majority of dog food comes from the same manufacturer, although the company is not FDA-approved was named.
As the investigation is still ongoing, other brands may be added to the list, according to FDA recalled recalled products.
The FDA asks that people who have bought one of the affected brands stop giving dog food and take the dog to a veterinarian if the animal begins to show symptoms of excessive vitamin D.
The symptoms include "vomiting, loss of appetite, increased thirst, increased urination, excessive drinking and weight loss," the FDA said.
Any pet owner or veterinarian who notices dogs with the symptoms is advised to contact the FDA may be used in the investigation. Veterinarians can submit information through the Safety Reporting Portal, while pet owners can contact their local consumer complaint coordinator.
For a complete list of products included in the recall, visit the FDA website and any updates to the study or any brands of dog food that have been added to the recall.