The organosulfoxides (sulfurs) in onions, garlic, leeks and chives react with the cell membranes of the red blood cells of dogs, causing the cells to lyse (explode). Cats are even more sensitive to the lytic effects of allium (onion family) toxicosis than dogs. It is a common myth that a small amount of onions or garlic is not harmful to dogs. In fact, many homemade dog … [Read more...] about The Dangers of Onion Toxicity