Unripened Tomatoes:Tomatoes are technically fruits, but many people see them as vegetables. While ripened tomatoes are safe for dogs to eat, unripened tomatoes aren’t. The plant itself is also toxic to dogs.
Scallions:The last Allium vegetable on our list, scallions, is also unsafe for your dog to eat. If your dog consumes scallions, bring them to the veterinarian right away.
Rhubarb:Symptoms of rhubarb poisoning include drooling, vomiting, diarrhea, decreased appetite, tiredness, weakness, tremors, changes in thirst or urination, and blood in the urine.
Raw Potatoes:The levels of solanine in the potato go down when cooked, which is why we previously thought cooked potatoes were safe.
Peas:While they aren’t toxic, peas are possibly linked to DCM in dogs. They might be okay in small amounts–current studies are focused on peas being used as a filler in grain-free dog foods.
Onions:Dogs cannot eat onions or any part of an onion plant. This includes foods with onion powder, which is more concentrated and thus even more toxic than whole food.
Mushrooms:Wild mushrooms can be toxic to dogs, so it’s best to avoid feeding them altogether. That said, the mushrooms you buy at the grocery store are safe in small amounts.
Leeks:Leeks are also part of the Allium family, and your dog may present with the same symptoms as with the veggies above–red blood cell damage, anemia, and GI upset.
Garlic:Garlic is another very toxic vegetable for dogs. Like onions, it’s toxic in all forms, including fresh, cooked, and powdered.
Chives:Chives, in particular, can cause damage to red blood cells, stomach upset, and weakness. Symptoms might not appear until several days after your dog eats chives.