What Are Some Foods That Are Harmful for Dogs?

Some foods harmful to dogs include avocado, chocolate, grapes and raisins, macadamia nuts and xylitol from sugar-free gum or sugar-free baked goods, notes the American Society for the Prevention of Cruelty to Animals. All poisonous foods must be kept out of reach.

If a dog eats any of these foods, call a veterinarian, even though not every toxic food involves life-threatening consequences for the dog because he can determine whether or not the dog needs immediate treatment. Symptoms can range from abnormal blood pressure, tremors, irregular heartbeats, seizures and even death. It is best not to provide dogs with human food because many different human foods are toxic to dogs, notes the Humane Society. Providing dogs with human food, even when not poisonous, can cause unnecessary weight gain. Human food is usually spicier and has a higher fat content then commercial dog food, notes Cesar Millan, Inc.

Other foods poisonous for dogs include onions, garlic, coffee, peach pits and rhubarb leaves, according to the Humane Society. When a dog eats a toxic food, a veterinarian induces vomiting as soon as possible. Next, he gives the dog activated charcoal to help absorb the toxins and IV fluids to stay hydrated. Remember to keep dogs away from trash cans where they can access toxic food when no one is looking. Toxic situations involving poisonous items account for 15 to 20 percent of all animal emergencies notes Cesar Millan, Inc.