When you are cooking dinner and spill some of the food on the floor, it is tempting to call your dog over to clean up after you. It can also be hard to say no to those puppy eyes that your dog gives you as they beg from some of your food. While there is nothing wrong with giving your dog table scraps (but be sure to put scraps in their bowl so they don’t learn to beg), it is extremely important that you are aware of what you can and can’t feed your pet.

Dogs and cats may be able to eat some human food, but others can be poisonous to them! Because of this, we wanted to help give you a list of foods that you should never feed your dogs or cats!

At Paradise Point Animal Hospital in Phoenix, we offer a variety of veterinary services that can help keep your pet healthy and happy. If your pet accidentally eats one of these foods and begins to act sick, be sure to contact us right away! Be sure to read this blog so that you are aware of what you cannot feed your pet.

Foods You Can’t Feed Your Dog

Macadamia Nuts

Macadamia nuts are one of the most poisonous foods for dogs. They can cause vomiting, increased body temperature, inability to walk, and lethargy. Macadamia nuts can also affect your pup’s nervous system.


Chocolate contains two things that are toxic to dogs — theobromine and methylxanthines. Methylxanthines are stimulants that stop a dog’s metabolic process. The tiniest bit of chocolate, especially dark chocolate, can cause vomiting and diarrhea. A large amount of chocolate may lead to your dog having a seizure, cause irregular heart function, and possibly death. Be sure to keep chocolate where dogs cannot reach it. If your dog does somehow eat some chocolate, be sure to contact us right away.

Onions and Garlic

Onions and garlic are part of the Allium family. These foods, as well as chives, are toxic to dogs and garlic is five times more toxic to dogs than the rest of the Allium plants. These foods, whether they are powdered, raw, cooked, or dehydrated, can cause anemia in your dog, killing their red blood cells. Poisoning from onions and garlic may have delayed symptoms, but look for signs of weakness, vomiting, breathing problems, collapsing, and pale gums. Watch your dog for a few days, not just after they ingest onions or garlic. Be sure to pick these foods up off the floor right away when you drop them while cooking.


Avocados contain persin, which can cause vomiting and diarrhea in dogs if they eat too much. Persin is in the leaves, seeds, bark, and fruit of the avocado tree, so be sure to keep your dogs away from them if you grow your own avocados. The large seed can also get stuck in the intestines or stomach, which can cause an obstruction and could be fatal.


Grapes and raisins can cause kidney failure in dogs and just a small amount can make your dog sick. If you think your dog ate grapes or raisins, one of the symptoms is vomiting repeatedly. You may also notice that your dog becomes sluggish and depressed. If you notice these symptoms and think your dog ate grapes, be sure to contact us right away!

More Foods To Never Feed Your Dog:

  • Apple seeds
  • Apricot and peach pits
  • Cherry pits
  • Candy
  • Coffee
  • Gum
  • Hops
  • Mushrooms
  • Milk and other dairy products
  • Items containing xylitol
  • Salty snacks

Foods You Can’t Feed Your Cat

Milk and Dairy

While many people have the image of giving kittens a saucer of milk ingrained in their brains from watching cartoons, milk and other dairy products are actually not good for your cat. Most cats are lactose intolerant, which means that cow’s milk and dairy products can upset their stomach, causing vomiting and diarrhea.


Like dogs, chocolate can also be lethal to cats. The theobromine in chocolate is not good for cats and can cause vomiting, diarrhea, increased body temperature, rapid breathing and heart rate, and seizures. If your cat consumes a lot of chocolate, they can suffer from heart failure, weakness, or fall into a coma. All chocolate contains theobromine, but the most dangerous types are dark chocolate and unsweetened baking chocolate.


Another food that most people wrongly assume can be fed to cats is tuna. While some tuna every once in a while won’t hurt, feeding your cat tuna that is meant for humans regularly can lead to malnutrition. Too much tuna can also cause mercury poisoning. It is best to try to avoid feeding your cat tuna, unless it’s a special treat once a month.

Onions and Garlic

Similar to dogs, garlic, onions, chives, and leeks can cause anemia in cats. Whether it is powdered, raw, cooked, or dehydrated, it is best to ensure that your cat never has the opportunity to eat these foods. Eating a large quantity once or smaller amounts regularly can poison your cat. Chives can cause major health issues and can be potentially life-threatening for your cat.

Dog Food

If you have both a dog and a cat, and have your dog free feed, it is likely that your cat has sampled some of your pup’s food from time to time. While this is not a huge issue, it is important to never feed your cat a diet of dog food. Cat food is specifically formulated for cats and contains the proper nutrients that they need, including more protein, certain vitamins, and fatty acids. If you substitute dog food for cat food, it can lead them to become malnourished.

More Foods To Never Feed Your Cat:

  • Liver
  • Raw eggs

While it can be tempting to feed your pet some of your table scraps, if you are not aware of what your pet can and cannot eat, you could be poisoning them! This list is most of the foods that your pet should never eat. If you are unsure about a food, it is better to be safe than sorry and don’t feed your pet the food in question. Better yet, if you want your dog (or cat) to never beg, don’t feed them human food in the first place! They won’t know what they are missing out on.

If your pet gets into any of these foods or starts showing symptoms of poisoning, be sure to contact Paradise Point Animal Hospital in Phoenix today! Be sure to also learn more about our services and our pet wellness plans. We can help keep your pet healthy and happy throughout every stage of life.