Get

In Your Inbox

Dogster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Can Dogs Eat Marshmallows? Vet-Verified Risks & FAQ

Can Dogs Eat Marshmallows

We all love to indulge in a treat from time to time, and marshmallows are as indulgent as they come. Roasted over an open flame or mixed in with Rice Krispies, they are delicious and super-sugary snacks.

But is it okay to give your dog a marshmallow? They deserve such a tasty treat, don’t they?

While it may seem harmless to share a marshmallow with your dog, it’s actually not recommended. Dogs can’t handle sugary treats the way that we can, and some marshmallows contain xylitol, a sugar substitute that is toxic to canines.

Let’s get into why dogs shouldn’t eat marshmallows and what kinds of human treats are safer and healthier for them.

divider dog faces oct 2024

Why Can’t Dogs Eat Marshmallows?

It’s all in the ingredients. Store-bought marshmallows typically contain gelatin, corn syrup, water and sugar. Some often sugar-free marshmallows contain the natural sweetener xylitol, which is toxic to dogs. Never give your pet a marshmallow or anything else that contains xylitol.

If your marshmallows don’t contain xylitol, it likely won’t harm your dog if they eat one, but all that sugar is still not good for them in the long run.

close up of marshmallows
Image By: NoName_13, Pixabay

Dangers of Feeding Marshmallows to Dogs

Any food with a large amount of sugar should not be given to canines, and since a marshmallow mainly consists of sugar, it’s definitely not good for dogs.

If a dog eats too much sugar it can cause an upset stomach complete with vomiting and diarrhea. Eating lots of sugar over the long run adds a lot of extra calories to a dog’s diet which can contribute to weight gain and obesity. These in turn can contribute to things like diabetes and joint issues. Not to mention, high amounts of sugar can cause dental problems.

But don’t opt for sugar-free marshmallows instead, since there’s a chance that xylitol can be an ingredient. Why is xylitol so harmful to canines? It can trigger the rapid release of insulin that can quickly lead to a drop in blood sugar, leading to hypoglycemia. It can also lead to liver failure.

Signs of xylitol poisoning can include:
  • Vomiting
  • Lack of coordination
  • Weakness
  • Lethargy
  • Tremors
  • Seizures
  • Collapse
  • Coma

If your dog ate anything containing xylitol, even one mini marshmallow, contact a veterinarian immediately! You can also call the Pet Poison Helpline at (855) 764-7661 for further assistance.

Marshmallows can also be a choking risk, especially in small dogs

Female vet examining sick and sad Rhodesian ridgeback dog
Image By; Zontica, Shutterstock

What Should You Do If Your Dog Ate Marshmallows?

If your dog has eaten one or two regular sugar marshmallows, they will likely be fine. However, you should double-check the ingredients on the bag to ensure that no xylitol is present.

If your dog consumed a significant number of marshmallows, it is best to contact a vet immediately. While a few marshmallows may only give your dog an upset stomach, you should speak with a vet if your pet has a health condition like diabetes. Additionally, you should never give marshmallows to small or young dogs.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's our online service where you can talk to a vet online and get the personalized advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content Savings V1

divider dog faces oct 2024

Frequently Asked Questions

What Other Foods Are Bad for Dogs?

Several foods are bad for canines. You already know about xylitol, but there are also:

  • Avocados
  • Alcohol
  • Onions
  • Garlic
  • Anything with caffeine
  • Grapes
  • Raisins
  • Dairy products
  • Macadamia nuts
  • Chocolate
  • Bones
  • Fat trimmings
  • Raw eggs
  • Raw meat
  • Raw fish
  • Salt
  • Sugary food and drinks
  • Yeast dough
  • Human medicine

The list goes on, but these foods are the worst culprits and either are outright toxic or have the potential to make your dog sick.

If you suspect that your dog has eaten anything on this list, contact your vet or the closest vet emergency clinic for the next steps.

medical treatment of sick husky dog in vet clinic
Image By: Pressmaster, Shutterstock

What Are Healthier Sweet Snacks for Dogs?

Bear in mind that treats and snacks should only make up 10% of your dog’s diet, even if they are considered healthy. Your best bet is to stick with vegetables and small amounts of fruit, which is both healthy and sweet. Not all vegetables and fruit are safe, however. You should stay away from grapes and citrus fruits are also not recommended. Be sure to remove all seeds and pits and serve fruits and vegetables plain without seasonings.

The following fruits are safe for dogs:

  • Apples
  • Bananas
  • Blackberries
  • Blueberries
  • Cantaloupe
  • Carrots
  • Corn
  • Green beans
  • Honeydew
  • Peas
  • Pumpkin
  • Raspberries
  • Strawberries
  • Watermelon

Are Other Treats With Marshmallows Safe for Dogs?

No. A few of the other things that are generally eaten along with marshmallows make them even worse. For example, Rice Krispie squares have butter in addition to the sugar. S’mores have chocolate, which is toxic to canines. Basically, it’s best to just keep your dog away from sweet treats for humans!

divider dog faces oct 2024

Conclusion

Feeding sugary treats to your dog is not a good idea, though if your dog eats just a small amount of something with sugar, like one or two marshmallows, they are unlikely to suffer any lasting harmful effects. However, if your dog consumes a large number of sugary treats, especially anything containing xylitol, it’s essential to contact your vet.

As a responsible dog owner, you should avoid bringing products into your home that contain xylitol to ensure your pet’s safety. Stick with sweet healthy things like blueberries and watermelon, or throw in a few veggies, such as carrots and green beans.


Featured Image Credit: Nella, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.

How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Dogster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

4 Vietnamese Dog Breeds: Info, Pictures & History

After being domesticated a very long time ago, dogs have gradually become a part of Vietnamese culture and life. There are only a...

Trifexis for Dogs: Our Vet Explains the Uses & Efficacy

A TV news report says a common heartworm and flea preventative may be killing dogs -- but it has all the hallmarks of...

How to Stop Dogs From Bringing Outdoor Allergens Home: 7 Vet-Approved Ways

Dogs are without a doubt our best pals. Unfortunately, for those of us who love dogs but deal with allergies, the relationship can...

Head Pressing in Dogs: Vet-Reviewed Causes, Signs & What to Do

Keeping our dogs healthy and happy is an integral part of looking after them. When your dog starts intentionally pressing their head into...

More related

Revolution vs Advantage II Flea Treatment 2026 Comparison (Vet Answer)

Parasites are unpleasant creatures. Fleas, worms, and ticks not only irritate our pets but can also transmit disease. Fleas are probably the most...

Where Beagles Have Soared: On My Cessna, Dog Is Literally My Co-Pilot

Having a small plane and a pilot’s license is a blessing in these days of overbooked commercial flights, bizarre security measures, and inflexible...

How Much Does a Basset Hound Howl? Facts & FAQ

With their short legs, long bodies, wrinkles, and impressive droopy ears, Basset Hounds are one of the most popular and easily recognized dog...

15 Superfoods For Dogs: Our Vet Lists Top Foods & Their Benefits

Whether you’re a health fanatic or someone looking to add excellent nutrition to your dog’s diet, you might be wondering about superfoods that...

Keep reading

Can Dogs Eat Hominy? Vet-Verified Facts & FAQ

Hominy comes from corn and is made by soaking the corn kernels in lye or lime. The kernels are then rinsed off to take away the hulls. When cooked correctly, hominy has a soft texture and light taste. So can...

Can Dogs Eat_hominy

Why Is There No Pork in Dog Food? 5 Vet-Reviewed Reasons

Pork isn’t an ingredient in dog food that is completely unheard of, but it is much less common than others. If you check the back label of your dog food, you might see pork as an ingredient somewhere in the...

ham pieces cut up on a wodden cutting board pork meat

Can Dogs Eat Honeydew Melon? Vet-Verified Nutrition Facts & FAQ

Honeydew melon is a favorite treat to eat in the summer heat. But if your dog is trying to get a piece, you want to make sure it is safe. Can dogs eat honeydew? Yes, dogs can eat honeydew in...

Can Dogs Eat Honeydew Melon

10 Best Rawhide Alternatives for Dogs In 2026 – Reviews & Top Picks 

While some owners swear by rawhide chews, because they are especially good at keeping power chewers busy for hours at a time, many owners refuse to use them. Some manufacturers use chemicals like bleach and hydrogen peroxide to remove the...

A dog and it's antler A brown and white dog lying on it's bed chewing on a deer antler

How Much Does a Cavalier King Charles Spaniel Eat in a Day? Our Vet Explains

The Cavalier King Charles Spaniel is a toy dog breed that’s among the most popular dog breeds kept as pets today. Ranking at #14 according to the American Kennel Club’s (AKC) popularity ranking for 2023, it’s evident that these charming...

cavalier king charles spaniel eating bone treat

Can Dogs Eat Cabbage? Vet-Verified Nutrition Facts & Info

Cabbage is considered a healthy vegetable for humans, and one that we are encouraged to eat regularly as part of a balanced diet. It is also non-toxic to dogs, and, when fed in moderation, can make a beneficial addition to...

Dogster-Can-Dogs-Eat-Cabbage

How Much Should a French Bulldog Eat? Vet Explained Puppy to Adult Feeding Guide

Getting a new puppy is always so exciting! You have this little bundle of fur just wanting to eat, sleep, and play with you. As a veterinarian, we often get asked how much food is appropriate to be feeding a...

french bulldog eating or drinking from a bowl

10 Best Dog Foods for Puggles in 2026 – Reviews & Top Picks

So, you did it. You welcomed a new Puggle into the family. Now you need to figure out what you need to keep him safe, happy, and healthy. The pet store has so many choices of beds, toys, crates, and...

Puggle dog outdoors