Do Not Feed Your Pets ONIONS
Your pet's digestive enzymes are not the same as your digestive enzymes.
Our bodies DO have the digestive enzyme necessary to digest onions. The digestive systems of some animals, such as dogs, cats and guinea pigs, do NOT have the enzyme necessary to digest onions.
All onions, raw or cooked, are a danger – a poison – to these pets.
We will spare you the details here, but even small amounts of onions cause serious distress to their systems. YOU may or may not notice, depending on the amount ingested and the degree of interaction you have with your pet.
Not noticing is one matter. Causing it is another.