Dogs with mild onion poisoning will generally recover in about 3 days. Dogs that are poisoned by eating onions will usually urinate red urine. Once the owner discovers that his dog is poisoned by onions, he must take him to the pet hospital for treatment in time.
If a dog is sent to the hospital promptly after ingesting onions, it can generally be treated by inducing vomiting and gastric lavage. , but if the dog has eaten it for several hours, it needs to be given medicine to treat problems such as anemia and jaundice, because onion poisoning in dogs can cause acute hemolytic anemia. If the anemia is severe, it will need to be given a blood transfusion.