Why can’t dogs eat onions? What happens if a dog eats onion?

 9:00am, 17 July 2025

Dogs have only a few more years of life, and they have been running with their owners throughout their lives, so their owners are even more caring about it. As a result, parents who raise dogs will give their food to their dogs, believing that human food is more nutritious, but they don’t know that human food has many ingredients. These ingredients are likely to cause poisoning if dogs eat them, and in severe cases, they will cause the dog to die. Foods like onions are just. Why can’t dogs eat onions? Onions are so nutritious? How should we avoid similar things happening again in life!

Why do dogs not eat onions?

Ons are food for humans, but arsenic for dogs, because onions contain a toxic ingredient n-propyl disulfide. This sulfide can oxidize hemoglobin and form Heinz's body. The reticulum endothelial system swallows a large number of red blood cells containing Heinz's body, impairing the operation of red blood cells, thereby causing acute hemolytic anemia, which can damage the bone marrow and affect oxygen delivery.

In short, the sulfides in spicy plants (single, garlic) can destroy red blood cells. The common symptoms of dogs after excessive intake are hemolytic anemia, brown urine, abnormal pet behavior, and life-threatening in severe cases. It also pointed out that "most Rosaceae plants, grapes and raisins, chocolate, corn, peanuts, bones, mushrooms, hawaiian beans, etc." should be fasted.

In life, in addition to not allowing dogs to eat these spicy plants, we should also avoid letting dogs eat these foods!