While some dogs are finicky eaters, most will consume anything they can find on the floor. While there are some foods that dogs tolerate very well, there are many human foods that are dangerous or even poisonous for them to eat. Dogs do not understand that some of the foods their masters enjoy can actually make them sick. It’s up to owners to learn which foods should never be given to dogs, along with the reasons why. Some human foods are worse for dogs than others. While we’ve included the most dangerous in our list, we’ve also listed those that can lead to mild sickness because it’s important to do everything within your power to keep your dog healthy and happy. We’ve put together a list of the 20 worst foods you could give your dog, so you’ll know what you avoid.