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What Foods are Bad for Pets?

Tricia Christensen
Tricia Christensen
Tricia Christensen
Tricia Christensen

There are plenty of foods that are bad for pets, though certain foods may be bad for dogs and not for cats or vice versa. Some foods that are bad for both animals. It’s important for pet owners to take note of these because they are often common foods in many homes.

Foods that cats and dogs should not eat includes any types of raisins or grapes, which may cause kidney damage. Tomatoes may also be problematic, creating violent illness in both animals. Onions and garlic are also bad and may result in anemia if consumed regularly. This risk is higher for cats, but it still can occur in dogs.

Junk foods, like potato chips, should not be given to pets.
Junk foods, like potato chips, should not be given to pets.

Chocolate is equally a problem, and so are foods and drinks with alcohol. Neither dogs nor cats should eat uncooked yeast dough because it can expand in their stomachs. Another food that both cats and dogs can’t digest and may have problems with is raw potatoes of any kind.

For dogs, foods that should be avoided also include raw eggs, most nuts, large amounts of liver, cut fats off of meats, pits from fruit, persimmons, and — surprisingly — cat food. Cat food can create problems for dogs because it is high in fat and does not have the right nutritional balance for dogs. People who own dogs should feed them dog food, although if a dog ate cat food once in awhile, it would be unlikely to harm the animal.

Blue cheese is not good for rats and mice.
Blue cheese is not good for rats and mice.

Another food that may be bad for pets is milk. Some dogs and cats appear to digest milk fine, but others have significant intestinal upset from it. Most dairy products may bother the stomachs of pets, though they occasionally enjoy cheese and digest it well. Pet owners should choose lower fat cheeses for them, since this should be a treat instead of an every day type of food.

Sometimes, the food itself isn't bad, but the way the owner prepares it can be. If dogs or cats are given meat or fish, it should be free of small bones that can block the digestive system or cause cuts in the intestines.

People who have other types of pets should also be careful about what they feed them:

  • Rabbits — avoid lettuce, potato tops, leaves from tomato plants, and parsnips.
  • Most rats and mice — avoid blue cheese, raw potatoes, raw carrots and carbonated drinks.
  • Hamsters — avoid garlic, onions, frozen foods, chocolate, and citrus fruits.
Milk can cause stomach upset in some pets.
Milk can cause stomach upset in some pets.

When in doubt, a pet owner should check with a veterinarian about the best diet for his or her pet. People should remember that just about anything humans consider junk food is also bad for pets. When a person wants to give snacks to a pet, he or she should be sure that such treats that will not harm the animal.

Frequently Asked Questions

What human foods are toxic to dogs?

Tomatoes and tomato plant greens can be harmful to pets.
Tomatoes and tomato plant greens can be harmful to pets.

Chocolate, onions, garlic, grapes, and raisins are highly toxic to dogs. Chocolate contains theobromine, which can cause vomiting, diarrhea, and even death. Onions and garlic can lead to anemia by destroying red blood cells. Grapes and raisins can cause kidney failure, even in small amounts. Always keep these foods out of your dog's reach.

Can cats safely eat any human foods?

Dogs should not be given raw eggs to eat.
Dogs should not be given raw eggs to eat.

Cats can eat certain human foods like cooked lean meats, fish, and eggs. However, they should never be given onions, garlic, chocolate, caffeine, alcohol, grapes, or raisins, which are toxic to them. It's essential to feed these in moderation and ensure they don't contain harmful seasonings or additives.

Are there any fruits or vegetables that are dangerous for pets?

Hamsters should not be fed garlic, onions, chocolate, or citrus fruits.
Hamsters should not be fed garlic, onions, chocolate, or citrus fruits.

Yes, several fruits and vegetables are dangerous for pets. For example, grapes and raisins can cause kidney failure in dogs, while avocados contain persin, which is toxic to many animals. Onions and garlic can cause gastrointestinal irritation and red blood cell damage. Always research before sharing fruits or veggies with your pets.

Is it safe for pets to eat dairy products?

Cats and dogs should not be given raisins.
Cats and dogs should not be given raisins.

Many pets are lactose intolerant, meaning they have difficulty digesting dairy products. Consumption can lead to digestive upset, including diarrhea and vomiting. While some pets can tolerate small amounts of yogurt or cheese, it's generally best to avoid giving dairy to your pets, especially in large quantities.

How can I tell if a food is safe for my pet?

Pet rabbits should not be fed lettuce, potato tops or parsnips.
Pet rabbits should not be fed lettuce, potato tops or parsnips.

To determine if a food is safe for your pet, consult with your veterinarian and do thorough research. Avoid foods known to be toxic to animals, such as chocolate, caffeine, alcohol, xylitol, onions, garlic, and certain fruits like grapes. When in doubt, stick to pet-specific foods and treats designed for their dietary needs.

What should I do if my pet eats something toxic?

Hamsters should not be fed garlic.
Hamsters should not be fed garlic.

If your pet consumes something toxic, contact your veterinarian or the Pet Poison Helpline immediately. Time is critical, and prompt action can save your pet's life. Be ready to provide information about what your pet ate, how much, and when it happened. Follow your vet's instructions carefully, which may include inducing vomiting or bringing them in for treatment.

Tricia Christensen
Tricia Christensen

Tricia has a Literature degree from Sonoma State University and has been a frequent AllThingsNature contributor for many years. She is especially passionate about reading and writing, although her other interests include medicine, art, film, history, politics, ethics, and religion. Tricia lives in Northern California and is currently working on her first novel.

Learn more...
Tricia Christensen
Tricia Christensen

Tricia has a Literature degree from Sonoma State University and has been a frequent AllThingsNature contributor for many years. She is especially passionate about reading and writing, although her other interests include medicine, art, film, history, politics, ethics, and religion. Tricia lives in Northern California and is currently working on her first novel.

Learn more...

Discussion Comments

healthy4life

@seag47 – How horrible! I've known about grapes being bad for animals for awhile now, and that is the reason I never planted a grapevine.

My neighbor has cats, and I have dogs, so a grapevine would be bad for both of them. I have to say that animals often eat things that they find on their own that are listed as bad for them, but they don't seem to suffer any ill effects.

My dogs love pecans. I have four pecan trees in my yard, and they will sniff the nuts out, shell them at least partially, and eat the meat.

I wouldn't voluntarily feed them nuts, though. I think they eat them more out of boredom than anything else.

Also, my dog sometimes goes next door and eats cat food. However, he doesn't eat it regularly, because I feed him plenty of dog food, so he isn't actually hungry.

feasting

It's kind of weird that blue cheese is bad for mice. They are notorious cheese eaters! Of course, most people put cheese on mouse traps, so in that case, all kinds of cheese are bad for them!

seag47

My husband's ex-wife had a Yorkie as a pet, and he had no idea that grapes were bad for dogs. He once sat down with a full bag of grapes and shared it with the little dog.

The dog developed horrible kidney problems that resulted in surgery and the permanent placement of a tube to help him urinate. My husband was clueless to the fact that the grapes caused this, and he never thought to mention it.

However, after we got together and I told him that grapes were bad for dogs, he suddenly came to the realization that he had caused the Yorkie's problems. He felt terrible about it.

JackWhack

The weight of the animal factors into how it reacts to certain foods, too. If you have a chihuahua as a pet, he will be much more vulnerable to the effects of several pieces of chocolate than a Doberman would.

Also, I've heard that dark chocolate is worse, because it contains more of the ingredient that harms dogs. So, your dog would fare better if he got into a bar of milk chocolate than a bar of bittersweet chocolate.

Still, all chocolate is bad for any dog, and you should never give it to them, no matter how much they beg. You should keep all of your chocolate stored up high in a cabinet where the pet can't possibly reach it. Also, don't throw it in the outside trash bin, because they can get pretty crafty when they want to reach food.

serenesurface

It's true that different pets are allowed to eat different kinds of foods. But these can be further limited if your pet has suffered from a disease, health issue or has undergone surgery.

I have a British Shorthair who is about 9 months now. We recently had her spayed and now she has dietary restrictions because of the surgery. Since she doesn't have hormones anymore, the veterinarian said that if she is not very active, she is likely to gain weight which can result in cardiovascular problems in the long term. We have started feeding her light cat food which has less fat content.

Even before surgery, my cat had some sensitivities to food. I generally feed her with small amounts of dry cat food in the morning and at night. At lunch time, I boil some chicken for her which is her favorite food. She is unable to tolerate ground beef or fish for some reason, so I cannot give her any canned cat foods either because they always have fish in them. I know that cats cannot have milk because they do not have the enzymes to digest it, so I give her plain yogurt instead as a snack.

Basically if I feed her something knew, I have to look at her sandbox and see if she tolerated it well. Whether you have a sensitive pet like I do or not, I suggest you do the same so that if there is a problem you can catch it early.

candyquilt

I've had different pets all my life. When I was a child, I grew up with a Maltese, who as pets are an excellent choice because they are such friendly and calm dogs. At that time, there weren't so many choices of dog foods and snacks and it was normal to feed your pet food that was cooked at home that day. My dog ate home cooked meals with meat and chicken everyday. She also loved milk and never showed any adverse reactions to it. Although I never gave her any sweets or alcohol, I'm sure I fed some things that I shouldn't have, now I know better.

anon73767

Do not feed your pregnant female raw meat without freezing it first or rubbing it with eatable hydrogen peroxide. It may contain neospora caninum which will pass through the placenta and kill the puppy. By about eight weeks the puppy will have died.

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    • Junk foods, like potato chips, should not be given to pets.
      By: andersphoto
      Junk foods, like potato chips, should not be given to pets.
    • Blue cheese is not good for rats and mice.
      Blue cheese is not good for rats and mice.
    • Milk can cause stomach upset in some pets.
      By: karandaev
      Milk can cause stomach upset in some pets.
    • Tomatoes and tomato plant greens can be harmful to pets.
      By: Dusan Kostic
      Tomatoes and tomato plant greens can be harmful to pets.
    • Dogs should not be given raw eggs to eat.
      By: andrewsproule
      Dogs should not be given raw eggs to eat.
    • Hamsters should not be fed garlic, onions, chocolate, or citrus fruits.
      By: Subbotina Anna
      Hamsters should not be fed garlic, onions, chocolate, or citrus fruits.
    • Cats and dogs should not be given raisins.
      By: Dionisvera
      Cats and dogs should not be given raisins.
    • Pet rabbits should not be fed lettuce, potato tops or parsnips.
      By: hui_u
      Pet rabbits should not be fed lettuce, potato tops or parsnips.
    • Hamsters should not be fed garlic.
      By: Schlierner
      Hamsters should not be fed garlic.
    • Cats should not be given grapes to eat.
      By: Bartlomiej Nowak
      Cats should not be given grapes to eat.
    • Dogs should not be fed most nuts or cat food.
      By: Gelpi
      Dogs should not be fed most nuts or cat food.
    • Most pet rats shouldn't eat raw potatoes or carrots, or blue cheese.
      By: mariesacha
      Most pet rats shouldn't eat raw potatoes or carrots, or blue cheese.
    • Commercially processed dog food may be harmful to your pet.
      By: UJac
      Commercially processed dog food may be harmful to your pet.