What Parts of Onions are Toxic to Dogs?

Dogs ought to avoid eating any part of the onion plant, including the juice, leaves,

and processed powders. Onions, along with the rest of the plants in the allium family (garlic,

shallots, leeks, and chives), are poisonous to dogs whether they are consumed raw, cooked,

fried, or powdered. Surprisingly, onion powder may be found in a variety of

dishes, including soups and infant food. A 45-pound dog would only require eating one

medium-to-large onion in order to reach poisonous levels since it requires just 100 grams of

onion (about the size of a medium onion) per 20 kilos of a dog's weight to produce toxic

effects. This is a big worry since most dogs would happily eat an unsecured package of onion rings or an onion food.