There are many foods that humans eat that are unsafe for dogs & cats. Onions are one of them. Feeding onions – raw, cooked, or powdered – can damage your pet’s red blood cells and making them serious ill. Your pet could suffer from abdominal pain, lethargy and digestive difficulties, and may even need a blood transfusion to recover.
Think a little bit can’t hurt? Pets can also develop toxicity symptoms by eating even very small amounts of onions over a considerable length of time. Your best bet? Avoid feeding your pets foods that have any onion in them AT ALL!