Onion, pepper, pepper, onion, garlic and other irritating foods are not suitable for dogs. Because these foods will stimulate the gastrointestinal tract of dogs, not only cause inflammation, but also affect the sense of smell of dogs.

Onion contains a toxic component, n-propyl disulfide, which can oxidize hemoglobin into Heinz's corpuscles after being eaten by dogs. Reticular endothelial system devours a large number of red blood cells containing Heinz's corpuscles, causing acute hemolytic anemia and damaging bone marrow.

Dogs with average body weight 15-25 kg can develop severe anemia within 7-8 days after eating a medium-sized onion. On/0/-2 days after eating, red or dark red hemoglobinuria can be seen in sick dogs, and vomiting and diarrhea occur at the same time. Mental depression, palpitation, splenomegaly and other symptoms. Long-term feeding of a small amount of onion can cause chronic poisoning in dogs, showing jaundice and anemia.

Dogs with onion poisoning can recover naturally if they stop feeding onions. For those with severe hemolysis, glucose and Ringer's solution should be given, at the same time, cardiotonic agents such as sodium chloride and diuretic (furosemide) should be injected subcutaneously, and blood transfusion should be given if necessary.