List of Poisonous Vegetables for Dogs

Certain vegetables that humans relish as an ingredient in their everyday dishes can cause serious illness when eaten by dogs. Onions, garlic and mushrooms are good examples of vegetables that are safe for human consumption but are poisonous to dogs. The aftereffects of canine consumption of these vegetables can range from mild, such as vomiting and diarrhea, to deadly.

  1. Onions and Garlic

    • Onions and garlic contain thiosulphate, which is toxic to dogs. Because onions contain higher concentrations of thiosulphate, they are more of a danger than garlic. All variations of onions are poisonous to dogs, including raw onions, cooked onions, dehydrated onions and table scraps containing cooked onions or garlic. Common dishes containing onions that may cause illness in dogs include pizza, Chinese food and commercial baby food containing onions.

      If your dog eats onions or garlic, it may develop haemolytic anaemia, a condition where red blood cells burst while circulating the body. Gastroenteritis with vomiting and diarrhea are early signs of onion poisoning. Dogs affected by onion poisoning show no interest in food and may appear lethargic, weak and depressed. The red pigment from the burst blood cells gets passed to the urine, and your dog may experience breathlessness from the reduced number of red blood cells carrying oxygen through its body.

    Garden Vegetables

    • Vegetable gardens are a dangerous environment for dogs. If dogs consume tomato vines, rhubarb leaves and potatoes, serious medical conditions, such as kidney disease, and even death, may result.

    Mushrooms

    • Although only poisonous mushrooms are toxic to dogs, all mushrooms, including those safe for human consumption, may cause illness in dogs. The symptoms of mushroom toxicity include excess salivation, vomiting, diarrhea, abdominal pain and lethargy. Some dogs that ingest large quantities of mushrooms experience seizures and coma.

      To maintain the good health of your dog, do not feed it any type of mushrooms. When outdoors, keep your dog away from mushrooms with white spores or wart-like scales on the umbrella-like cap. According to the Wayne's Word website, an online textbook of natural history facts, these are typical characteristics of poisonous mushrooms.