Onions are just one of the many human foods that are
toxic to dogs. The severity of toxicity generally depends on how much onion
that dog has consumed. According to Dr. Jeff Warber, a dog would have to
consume a very large amount of onions for adverse reaction to occur.
The problem, however, lies in the build up of toxins
in the dog’s system. This means that frequent intake even in small amounts can
possibly lead to a point where ingestion of onion can make them sick because of
its cumulative effect. Just to be safe, it is best to avoid giving onions or
food that contains onions to dogs. Onion consumption in dogs can cause
hemolytic anemia, a condition that is characterized by the destruction of red
blood cells. In severe cases, onion poisoning can be fatal.
