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Can Dogs Eat Seaweed?

Yes, in moderation

Serve small amounts, and not every day.

Illustration of seaweed

Is seaweed safe for dogs?

Seaweed such as nori is a dried sea vegetable used in sushi and snacks. Plain, unseasoned nori is safe in small amounts, but iodine and sodium mean it should not be given often, and seasoned snack sheets are not suitable.

How to serve seaweed to your dog

What to avoid

How much seaweed can my dog have?

Treats, including seaweed, should stay under about 10% of your dog's daily calories. As a rough starting point, small dogs can have 1 to 2 bite-size pieces, medium dogs 2 to 4, and large dogs a small handful. Introduce it slowly and do not make it a daily habit.

Signs your dog may be having a problem

Watch for vomiting, diarrhea, drooling, pawing at the mouth, loss of appetite, tiredness, a swollen or painful belly, or trouble breathing. Contact your vet right away if you see these signs, or if your dog has eaten any of the parts listed above.

Emergency? Call your vet or an animal poison hotline straight away: ASPCA Animal Poison Control (888) 426-4435 or Pet Poison Helpline (855) 764-7661 (US numbers, a consultation fee may apply).

Frequently asked questions

Can puppies eat seaweed?

Young animals have more sensitive digestive systems and a carefully balanced diet, so check with your vet before adding seaweed. If you get the go-ahead, start with an even smaller amount than an adult would get.

What if my dog ate too much seaweed?

The most common result is an upset stomach with vomiting or diarrhea. Offer water, skip further treats, and call your vet if symptoms are severe or last more than a day, or if your dog ate any of the parts listed under "What to avoid".

How often can my dog have seaweed?

Treat it as an occasional extra rather than a daily food. Once or twice a week at most is a sensible starting point for a healthy adult dog, and less for small ones.

More questions dog owners ask

Wondering about the other pet in your home? Can Cats Eat Seaweed?

Last updated September 2026. This page is general information and is not a substitute for advice from your veterinarian. Every dog is different, so check with your vet before adding new foods, especially if your dog has health problems, is pregnant, or is very young or old.