Human Foods That Are Harmful to Dogs

Alcohol:  aside from leading to intoxication, giving alcohol to your dog can also cause weak breathing, lack of coordination, and abnormal acidity levels. Many types of beer also contain hops, which is toxic to dogs and can cause panting, vomiting, increased heart rate, fever, and even death.

Avocados: although they're great  food for people, avocados are not great for dogs. They contain persin, which can cause vomiting, diarrhea, and heart congestion. Avocado pits  are the most dangerous because they contain a high amount of persin and are also a choking hazard.

Cat Food: while they might look similar, cat and dog food are actually quite different. Cat food tends to have high protein and fat levels that can be far too high for dogs, which can result in your pup having an upset stomach,  and can lead to obesity and pancreatitis.

Chocolate, Coffee, and Tea:  aside from all of them containing caffeine, all of these human treats contain the alkaloids methylxanthines and theobromine. These ealkaloids are toxic to dogs and cause restlessness, increased heart rate, tremors, diarrhea, vomiting, seizures, and death. 

Cooked Bones: raw bones are perfectly fine for your dog (and filling them with peanut butter and freezing them is a great way to keep them busy), but cooked bones splinter too easily and pose a choking hazard to your dog. The splinters can also puncture your dogs stomach or intestines.

Corn on the Cob: small amounts of corn is okay to feed your dog, as long as it is not on the cob. The cob is a choking hazard and can also become an intestinal blockage if swallowed.

Fat Trimmings: both cooked and uncooked fat trimmings can cause pancreatitis in dogs, so it's not a good treat to give to your dog, no matter how hard they beg for your steak.

Fruit Pits and Seeds: many fruits are great snacks for your dog as long as they have no seeds or pits. Many seeds and pits, such as apple seeds and peach, persimmon, and plum pits, contain cyanide, which is poisonous and potentially deadly to both dogs and people.

Garlic and Onions: both of these vegetables are loved by many humans, these are toxic to dogs. Both garlic and onions contain disulfides and sulfoxides, which kills your dog's red blood cell count. This can lead to anemia, which causes weakness, trouble breathing, and vomiting.

Gum, Toothpaste, and Mouthwash: these minty dental hygiene and breath freshening products often contain xylitol, which is poisonous to dogs and can lead to loss of coordination, vomiting, seizures, and liver failure. 

Grapes and Raisins: both grapes and raisins are toxic to dogs, although the exact substance in them that is toxic is not known yet. Both of these can cause kidney failure, even in small amounts.

Macadamia Nuts: while it's best to not give your dog any nuts, these nuts should never be given to dogs, as they are lethal to them. Even in the tiniest amounts, macadamia nuts can cause muscle shakes, fever, weak back legs, and vomiting.

Milk and Dairy: while milk and dairy aren't poisonous or toxic to dogs, they can cause diarrhea and digestive problems. They can also trigger food allergies, so it's best to leave these out of your dog's diet.

Mushrooms: many types of mshrooms are unafe for dogs to eat, and can cause a wide array  of problems, such as agitation, disorientation, lack of coordination, tremors, diarrhea, vomiting, slow heart rate, weakness, respiratory problems, seizures, kidney damage, and liver failure.

Raw Eggs, Fish, and Meat: these foods can all be contaminated with harmful bacteria such as E. Coli  and Salmonella. These bacterias can cause vomiting, fever, and enlarged lymph nodes. If your dog is on a raw food diet, make sure the meat or fish is uncontaminated and safe for consumption.

Rhubarb and Tomato Leaves: both of these vegetable leaves contain oxalates, which cause drooling, lethargy, weakness, diarrhea, vomiting, tremors, and bloody urine in dogs.

Salt: high amounts of salt in human diets isn't great either, but too much salt in a dogs diet can lead to sodium ion poisoning. This may result in a fever, diarrhea, vomiting, tremors, seizures, and even death in severe cases.

Sugar and Candy: just like people, sugar can lead to dental problems, obesity, and diabetes in dogs. Additionally, some candies contain xylitol, which is toxic to dogs, as mentioned earlier.

Yeast: dogs should never eat yeast or raw dough containing yeast.  The yeast will expand and rise in their stomach, which can cause gas, bloating, and discomfort. If eaten in large amounts, yeast can rupture your dog's stomach and intestines.