Many vegetables are healthy for your dog, but be aware of ones that can hurt them. Image Credit: Kira-Yan/iStock/GettyImages

Dogs are omnivores, which means they can eat a variety of foods, including vegetables, which are great for your dog's health. But just because dogs can eat veggies doesn't mean that all of them are safe for your canine companion. Keep your pooch healthy by knowing what veggies should stay securely stowed in the fridge or pantry.

Bulb Veggies

The ASPCA's basic rule of thumb is if a vegetable grows as an underground bulb, keep it out of Fido's bowl. Onions, chives and leeks contain a chemical that can break down your dog's red blood cells if he eats too many of them. In small quantities, these bulb veggies are usually harmless, but the best way to be safe is to avoid them altogether.

Bell peppers are great, but garlic is not! Stay out of the seasonings if you're giving veggies to your pup. Image Credit: al_louc/iStock/GettyImages

Garlic contains the same chemical, but in smaller amounts, advises the Holistic Dog. Some dog foods and treats contain very low doses of garlic, which are generally considered safe by most veterinarians and pet nutritionists. To be safe, never give your dog whole cloves of garlic or large quantities of garlic powder. If your dog eats any of these vegetables, he may develop anemia, which can be fatal if left untreated.

Keep Fido away from tomato plants, especially the toxic leaves and stems!

Potato and Tomato Leaves & Stems

Many high-quality dog foods use potatoes and tomatoes as ingredients. These two vegetables themselves are safe to eat, but according to Pet Poison Helpline, the leaves and stems of the plants are very toxic to dogs. The green parts of the plants contain solanine, which can cause vomiting, diarrhea, weakness and confusion in dogs. If your dog sometimes visits your vegetable garden, be sure to limit his access to the tomato, potato and other nightshade plants, including bell pepper, eggplant and tomatillo.

Leafy greens and lettuces are fine, but the leaves and stems of certain plants like potato, tomato, and rhubarb are harmful. Image Credit: ChesiireCat/iStock/GettyImages

Rhubarb

Rhubarb pie is a tasty human treat, but Pet Poison Helpline advises that rhubarb is toxic for your canine friend. Like the stems and leaves of the nightshade plants, the leaves and stalk of the rhubarb are the toxic parts. Both the stalk and leaves contain oxalate crystals (although the leaves are more toxic), which deplete the calcium in the dog's body. Symptoms of rhubarb poisoning include drooling, loss of appetite, vomiting, diarrhea, lethargy, weakness, tremors and bloody urine. In some severe cases, rhubarb poisoning can cause sudden renal failure.

All mushrooms are dangerous to dogs so keep your puppy away from them! Image Credit: bksrus/iStock/GettyImages

Mushrooms