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Can dogs eat marshmallows?

Caution

Quick verdict

Caution

Key risk

Sugar-free marshmallows may contain xylitol, which is highly toxic; even plain ones are a choking risk.

Why

Plain marshmallows are pure sugar and best avoided; sugar-free ones can be deadly.

Can dogs eat marshmallows, and why?

Plain marshmallows are pure sugar and best avoided; sugar-free ones can be deadly. Sugar-free marshmallows may contain xylitol, which is highly toxic; even plain ones are a choking risk.

Dogs are omnivores, so most of their diet should be a complete, balanced dog food, with treats on top. They cope with a wide range of foods, but rich, fatty or sugary ones can cause stomach upset and, over time, weight gain or pancreatitis.

Warning — what to watch for

Sugar-free marshmallows may contain xylitol, which is highly toxic; even plain ones are a choking risk.

If your dog has eaten marshmallows, don’t wait for symptoms — contact your vet immediately, or call the Animal PoisonLine on 01202 509000 (24/7, UK). Signs of a problem can include vomiting, diarrhoea, drooling, lethargy, tremors or loss of appetite.

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More foods dogs might eat

Make treat time better

Handy kit for feeding dogs well:

Frequently asked questions

Can dogs eat marshmallows?

Caution. Plain marshmallows are pure sugar and best avoided; sugar-free ones can be deadly.

What happens if my dog eats marshmallows?

Sugar-free marshmallows may contain xylitol, which is highly toxic; even plain ones are a choking risk. If your dog has eaten marshmallows, contact your vet or the Animal PoisonLine (01202 509000) straight away — don’t wait for symptoms.

Is marshmallows poisonous to dogs?

Caution. Plain marshmallows are pure sugar and best avoided; sugar-free ones can be deadly.

Check marshmallows for another pet

General guidance based on established veterinary sources (ASPCA, PDSA, Blue Cross, RSPCA), not a substitute for advice from your vet. If you’re ever unsure, or your pet has eaten something harmful, contact your vet or the Animal PoisonLine on 01202 509000.