Onion and garlic poisoning results in oxidative damage to the red blood cells (making the red blood cells more likely to rupture) and gastroenteritis (e.g., nausea, oral irritation, drooling, abdominal pain, vomiting, diarrhea).
What breed of dogs have killed more people? The Pit bull has killed the most people, surprisingly, as they are so friendly. The second breed that has killed the most people is the Rottweiler.
Disease categories. The study found that cancer was by far the most common cause of death in the disease category for adult dogs; cancer was the leading cause of death in all but 11 breeds! Almost a third of adult dogs of all adult dogs were found to have died of cancer.