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

Dog Nutrition

Can Dogs Eat Marshmallows? Vet-Verified Risks & FAQ

Kathryn Copeland
By Kathryn Copeland · Reviewed & fact-checked by Dr. Chyrle BonkVet Approved
Dr. Chyrle Bonk
Reviewed & Fact-Checked byDr. Chyrle BonkDVM (Veterinarian)
On top of caring for animals and writing for veterinary publications, Dr. Chyrle Bonk owns a small cattle herd! When she’s not busy with those things, she can be found somewhere enjoying the Idaho outdoors with her husband and two kids. Dr. Chyrle Bonk received her Doctor of Veterinary Medicine (DVM) from Oregon State University in 2010.View authorThe information is current and up-to-date in accordance with the latest veterinarian research. Learn more
Updated on June 29, 2026
Share
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.

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

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.

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.

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.

Sources

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.

Kathryn Copeland
Authored by

Kathryn Copeland

Can Dogs Eat Marshmallows? Vet-Verified Risks & FAQ

Can Dogs Eat Marshmallows? Vet-Verified Risks & FAQ

Most pet parents love to spoil their furry friends with all kinds of treats, so if you and your family are eating tasty marshmallows, you’ll likely be tempted…

Visnja Radosavljevic
By Visnja Radosavljevic · 6 days ago
Can Dogs Eat Gummy Bears? Vet-Verified Nutrition Facts & Info

Can Dogs Eat Gummy Bears? Vet-Verified Nutrition Facts & Info

When your dog is begging for food, they don’t care what it is you’re eating; they just want some. However, while they may not care what it is as long as they g…

Misty Layne
By Misty Layne · 2 weeks ago
Can Dogs Eat Gummy Worms? Vet-Verified Nutrition Facts & Alternatives

Can Dogs Eat Gummy Worms? Vet-Verified Nutrition Facts & Alternatives

We take our dogs with us wherever we go, spoil them on holidays, and consider them part of our family. So, it makes sense if you’d like to share your favorite…

Chantelle Fowler
By Chantelle Fowler · 2 weeks ago
Can Dogs Eat Cotton Candy? Vet-Verified Facts & Safety Guide

Can Dogs Eat Cotton Candy? Vet-Verified Facts & Safety Guide

We all want to share our special treats with our dogs, but some things are off-limits. Cotton candy, which is just air and sugar, may seem fine, but it’s not g…

Nicole Cosgrove
By Nicole Cosgrove · 1 week ago
June 29, 2026

Can Dogs Eat Starburst? Vet-Reviewed Facts & FAQ

Technically speaking, Starburst candies are not toxic to dogs, but dogs should not consume them because they are full of sugar, have no nutritional value, and…

Dr. Iulia Mihai, DVM MSc
By Dr. Iulia Mihai, DVM MSc
Can Dogs Eat Starburst? Vet-Reviewed Facts & FAQ
June 29, 2026

Can Dogs Eat Lollipops? Vet-Reviewed Facts & FAQ

Not all snacks are good for our canine companions. That's why it's so important to check before ever giving your pet a new food. When it comes to an ordinary c…

Ashley Bates
By Ashley Bates
Can Dogs Eat Lollipops? Vet-Reviewed Facts & FAQ
June 17, 2026

Can Dogs Have Twizzlers? Vet Approved Facts & FAQ

Dogs enjoy eating many human snacks, and it’s really difficult to resist sharing your food when your dog is giving you puppy eyes. Fortunately, there are many…

Jessica Kim
By Jessica Kim
Can Dogs Have Twizzlers? Vet Approved Facts & FAQ
June 29, 2026

Can Dogs Eat Jam? Vet-Reviewed Potential Health Risks

Perhaps your furry friend got into a jar of this sweet spread, which is why you're wondering if jam is safe for dogs to eat. If jam is safe for humans, can dog…

Hanh Duong
By Hanh Duong
Can Dogs Eat Jam? Vet-Reviewed Potential Health Risks
June 17, 2026

Can Dogs Eat Jelly Beans? Vet-Verified Nutrition Facts & FAQ

If you have kids, I’m sure you’ve encountered your fair share of jelly beans. Maybe you’ve even eaten a handful or two (or more) in your lifetime. These colorf…

Chantelle Fowler
By Chantelle Fowler
Can Dogs Eat Jelly Beans? Vet-Verified Nutrition Facts & FAQ
June 29, 2026

Can Dogs Eat Jolly Ranchers? Vet Approved Facts & FAQ

Do you have a candy jar on the coffee table or the counter? Does your dog enjoy stealing food when you're not looking? You are not alone! With dogs, this is a…

Hanh Duong
By Hanh Duong
Can Dogs Eat Jolly Ranchers? Vet Approved Facts & FAQ
June 17, 2026

Can Dogs Eat Cool Whip? Vet Approved Facts & FAQ

Cool Whip is a summer favorite—a perfect topping for all hot weather treats! It is no wonder that our dogs want a dollop for themselves! If your dog got into t…

Ashley Bates
By Ashley Bates
Can Dogs Eat Cool Whip? Vet Approved Facts & FAQ
June 29, 2026

Can Dogs Eat Vanilla Wafers? Vet-Reviewed Facts & FAQ

Vanilla wafers are not toxic to dogs, although they certainly aren’t the healthiest. Therefore, they aren’t a good option as a treat or snack. If your dog acci…

Kristin Hitchcock
By Kristin Hitchcock
Can Dogs Eat Vanilla Wafers? Vet-Reviewed Facts & FAQ

Love Dogs? So Do We! Join the Dogster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.

You may opt-out at any time. View our Privacy Policy for more information.

The Dogster app on a phone