In spite of the belief that dogs are strictly carnivorous, most of them are actually omnivores and eat a wide variety of fruits and vegetables. In fact, our dog loves eating fruits, but we have to take into account that a few fruits and veggies could be poisonous for our pets.
Grapes and raisins can cause kidney damage for cats and dogs, so avoid feeding these entirely. Citrus fruits like lemons, limes, and grapefruit as well as persimmons can cause an upset stomach.
Also, steer clear of onions or garlic as they are toxic in all forms: cooked, raw, and even onion powder. These cause damage to the red blood cells, ultimately causing them to burst. Rhubarb and wild mushrooms also contain toxins. It is also suggested avoiding corn as it is a common allergen among pets.