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    4. Latkes

    Latkes are a savory Hanukkah treat harboring considerable toxic potential for pets. Potato and egg are combined with onion, fried in oil, and slathered with sour cream and/or applesauce. Fresh grated onion, one of the Latke’s three main ingredients, causes Heinz body anemia in both dogs and cats. Besides onion’s toxicity, Latkes are high in fat and carbohydrates, which are likely to upset your pet’s digestive tract.