11. Fatty foods
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Dogs are very good at using fat for energy, which is why it’s common to see high-fat content in many pet foods. Dogs transport cholesterol as "HDL", the good cholesterol, so no worries about atherosclerosis and heart disease. Problems arise when dogs experience quick changes in either the amount or type of fat in their diet. Foods that are high in fats — for example, bacon, sausage, ribs, and fried fast foods — can lead to an upset stomach, diarrhea, or vomiting. In certain cases, eating unhealthy, high-fat foods like these can even cause pancreatitis. While it’s often difficult to say "no" to a begging puppy, it’s best to avoid sneaking your dog any of these unhealthy treats.