Answers Pet Food is voluntarily withdrawing products nationwide due to fears of Salmonella and Listeria. The FDA says 3 dogs have become ill.

Listeria can cause fever, headache, muscle aches, stiff neck, nausea, abdominal pain, diarrhea, confusion, loss of balance and convulsions in humans, the FDA said. Young children, the elderly, pregnant women and people with weakened immune systems are particularly vulnerable.

The pet food was found to be contaminated with bacteria that can cause illness and even death in pets and humans.