Dogs must not eat onions. Dogs can be poisoned if they eat onions. Onions contain disulfides, which are harmless to humans, but can cause oxidation of red blood cells in dogs, causing hemolytic anemia and hematuria.

And the smell of onions can easily stimulate a dog’s sense of smell, causing it to sneeze and affecting its sense of smell. Onions are an irritating food that can irritate a dog's intestines and easily cause diarrhea and vomiting. Onions, such as onions, can cause hemolysis in dogs, which can be life-threatening in severe cases.

Onions, chocolate, grapes, butter, avocados, fungi, preserved eggs, salty foods, seafood, cherries, plums, alcohol and other foods can also cause poisoning in dogs. Bones are also difficult for dogs to feed. They can easily scratch the esophagus, get stuck in the throat and cause suffocation.

Dogs are carnivorous animals. When feeding, more animal protein needs to be prepared in the feed, supplemented by vegetarian ingredients to ensure the normal development and health of the dog. Dogs sometimes eat grass, but they eat very little and occasionally vomit it up. Dogs eat grass not to satisfy their hunger, but to clear their stomachs, mainly because of their unique gastrointestinal structure. Generally speaking, if a dog weighing 15-25 kilograms accidentally eats a medium-sized onion, the sick dog will excrete red or dark red hemoglobinuria 1-2 days after eating, and vomiting and diarrhea will occur at the same time; Symptoms include depression, palpitations, and splenomegaly. Severe anemia may occur after 7-8 days. Parents are reminded that if the dog uses onions for a long time, it may suffer from chronic poisoning, showing jaundice and anemia.