Common Foods That Are Harmful Or Even Fatal to Dogs Many common foods are actually harmful or even fatal to dogs. Some of these (listed below) will surprise you. Others are things you would never give your dog purposefully, but now you will be more careful to not let them be in your dog's reach. And some just need to be limited to small amounts. avacados are toxic to dogs Avocados (fruit, pit, and plant) are toxic to dogs. They can cause difficulty breathing; fluid accumulation in the chest, abdomen and heart; or pancreatitis. onions can be fatal to dogs Onions destroy red blood cells and can cause anemia, weakness, and breathing difficulty. Even small amounts can cause cumulative damage over time. This includes onions or chives - raw, powdered, dehydrated, or cooked. garlic is harmful to dogs Large amounts of garlic cause the same problems as onions. grapes and raisins can be fatal to dogs Grapes and raisins can cause kidney failure in dogs. As little as a single serving of raisins can kill him. If the dog doesn't eat enough at one time to be fatal, he can be severely damaged by eating just a few grapes or raisins regularly. tomatoes can be fatal to dogs Tomatoes can cause tremors and heart arrhythmias. Tomato plants and the most toxic, but tomatoes themselves are also unsafe. (All parts of the plant except the tomato itself are also poisonous to humans.) nutmeg is can be fatal to dogs Nutmeg can cause tremors, seizures and death. caffeine is harmful to dogs Caffeine (from coffee, coffee grounds, tea, or tea bags) stimulates the central nervous and cardiac systems, and can cause vomiting, restlessness, heart palpitations, and even death within hours. xylitol sweetener can harm dogs Diet products containing the sweetener Xylitol can cause a sudden drop in blood sugar, resulting in depression, loss of coordination and seizures. Unless treatment is given quickly, the dog could die. macadamia nuts can harm dogs Macadamia nuts can cause weakness, muscle tremor and paralysis. These symptoms are usually temporary. walnuts are poisonous to dogs Walnuts are poisonous to dogs. chocolate can be fatal to dogs Chocolate can cause seizures, coma and death. Baker’s chocolate is the most dangerous. The darker the chocolate, the more dangerous it is. But any chocolate, in large enough amounts, can kill a dog. An ounce of chocolate can poison a 30-pound dog, and many dogs will happily consume more than this. The symptoms may not show up for several hours (and so might make you think all is well), with death following within twenty-four hours. A dog can consume milk chocolate and appear to be fine because it is not as concentrated, but it is still dangerous. fruit pits are toxic to dogs Apple seeds, cherry pits, and peach pits, pear pips, plums pits, peaches, and apricot pits contain cyanide, which is poisonous. too much salt is harmful to dogs Too much salt can cause kidney problems. Also, large breeds of dogs that eat salty food may then drink too much water and develop bloat, which is fatal unless emergency treatment is given very quickly. too much fat is harmful to dogs Too much fat or fried foods can cause pancreatitis. ham and bacon are bad for dogs Ham and bacon contain too much fat and too much salt, and can cause pancreatitis. Also, large breeds of dogs that eat salty food may drink too much water and develop a life-threatening condition called bloat. This is where the stomach fills up with gas and within several hours may twist, causing death. too much liver is harmful to dogs Raw liver or too much cooked liver (three servings a week) can lead to vitamin A toxicity. This can cause deformed bones, excessive bone growth on the elbows and spine, weight loss, and anorexia. Check the label of your canned dog food to be sure that it does not contain liver if you are giving your dog liver also. wild mushrooms can be fatal to dogs Wild mushrooms can cause abdominal pain, drooling, liver damage, kidney damage, vomiting, diarrhea, convulsions, coma, or death. raw egg whites alone are bad for dogs Raw egg whites contain a protein called avidin, which can deplete your dog of biotin, one of the B vitamins. Biotin is essential to your dog’s growth and coat health. The lack of it can cause hair loss, weakness, growth retardation, or skeleton deformity. Raw egg yolks contain enough biotin to prevent the deficiency, so this is not a problem with raw whole eggs. Raw egg yolks could contain salmonella, so you should get your eggs from a reliable source or cook the eggs. large amounts of grains are bad for dogs Grains should not be given in large amounts or make up a large part of a dog’s diet, but rice is generally safe in small amounts. cooked bones can kill dogs Cooked bones can splinter and tear a dog’s internal organs. dogs need their vegetables cut up Dogs can't digest most vegetables (carrots, green beans, lettuce, potatoes or yams) whole or in large pieces. Potato peels and green potatoes are dangerous. dairy products can be harmful to dogs Dairy products are high in fat, which can cause pancreatitis, gas and diarrhea. A small amount of non-fat, plain yogurt is usually safe. pennies can be fatal to dogs Pennies made from the 1980s to today contain zinc, which can cause kidney failure and damage to red blood cells. A dog that consumes even one penny can become quite sick, or even die, if the penny is not removed.