Can Cats Eat Seaweed? 8 Seaweed Options

Seaweed is considered one of the newest superfoods to hit the market, providing people with a vast supply of vitamins and nutrients. Considering what a great source of nutrients it's proving to be, many people are now wondering how it affects our pets. Can cat's eat seaweed? The short answer to that question is yes, but read further to learn more about how your cat can benefit from seaweed in their diet.

What are the benefits of your Cat eating Seaweed?

Free Radicals

In fact, cats can achieve the same benefits that seaweed offers to humans, because the need for antioxidants in the blood is similar. Due to those antioxidants, seaweed offers equivalent levels of protection in both people and cats against free radicals.

The problem with free radicals is that, when the body is left unprotected against them, they can damage cells to the point of causing degenerative illnesses, such as arthritis and several types of cancer.

Free radicals are naturally produced by the body, but their levels can be boosted through elevated stress, environmental factors, and from poor eating habits.


Whether for yourself or for your cat, eating foods high in antioxidants can help keep those free radicals in check and reduce the risks of developing cancer and other diseases.

Additionally, antioxidants work to fight infection. This means your cat will be less likely to develop sickness, including the common cold or a fever. There's also the possibility that seaweed can slow the progression of mental and physical decline, as your cat ages.


In answering the question of can cat's eat seaweed, it's also important to point out that older cats may obtain even greater benefits from adding seaweed to his or her diet.

Another advantage of eating seaweed is that it has anti-inflammatory properties, so it can reduce swelling in the body. For older cats, this means that joint and muscle pain will be reduced. As the inflammation subsides, pain associated with the condition will be alleviated and your cat will have better mobility.

Can Cat's Eat Seaweed From Any Source?

There are actually eight kinds of seaweed that can boost the health of your cat, when added to your pet's diet. looking at these types of seaweed, it's easy to see that the benefits provided by antioxidants and its anti-inflammatory properties are just the beginning.

Depending on the kind of seaweed, the question may not be can cat's eat seaweed as much as what type of seaweed is best for your cat?

8 Kinds of Seaweed

1. Acadian Sea Kelp 

This is a brown algae farmed from cold water sources. It contains a storehouse of nutrients that include:
  • Calcium protein
  • Potassium
  • Iron
  • Copper
  • Sulphur
  • Iodine
  • Magnesium
Together, these compounds work to boost your cat's immune system, which reduces the risks of infection and illness.

2. Dulce

This is another type of seaweed that delivers a powerful array of nutrients to the body. One of its greatest benefits, however, is in boosting digestive function in your cat. It can also boost thyroid gland function in your feline companion.

3. Irish Moss

This natural product can come in virtually any color from greens and browns to purples. Feeding this to your cat will help fortify the organs and glands of your cat. Additionally, the calcium chloride in Irish moss works to promote greater heart health.

4. Nori

This is the most commonly found kind of seaweed, but that doesn't mean it lacks vitamins and nutrients. Nori is most popularly associated with boosted retinal health and for improving the digestive functioning.

5. Kombu

Again, in answering can cat's eat seaweed, this is another healthy choice. You may opt for kombu, if your cat is experiencing poor liver, heart, or kidney function, since its nutrients work most noticeably on strengthening those organs.

6. Wakame

When people ask can cat's eat seaweed, it's often with the intention of putting their cat on a healthier diet. If your cat struggles with obesity and needs to eat better foods, add some wakame to their food. 
Additionally, it contains the following nutrients:
  • Chlorophyll
  • Calcium
  • Magnesium
  • Protein
  • Thiamine

7. Sea Lettuce

This may be selected less often for people wanting to know can cat's eat seaweed, because this green algae doesn't contain as many vitamins and nutrients as the other options. It is a great source of iron, however.

8. Blue-Green Algae

Here's another great option for pet owners wanting to know can cat's eat seaweed. Blue-green algae is literally a powerhouse of good, delivering beta-carotenes, vitamins, and minerals to your cat's body. It also contains glycogen, which boosts cognitive function and can stave off mental decline in your cat.

Can Cat's Eat Seaweed Raw?

There are two ways to feed seaweed to your cat, either in a dietary supplement, or dried and sprinkled directly on the food. It may be best to ask your vet about your concerns in determining can cat's eat seaweed, so you can ensure your pet's specific dietary needs are being met. 

The recommended dosage of seaweed is 1/8 teaspoon for a small cat. Sprinkle it lightly over the cat's dry food or mix it together in moist food. If your cat doesn't like the taste, you might try mixing it in with the pet's favorite table scraps to disguise the taste and odor of the seaweed.

In opting for supplements, be sure to read warning labels and ingredient listings. Many cat supplements already come with seaweed added, so, if you give your cat a dietary supplement and add a special seaweed supplement, you may be giving the pet too much.

Seaweed can provide vast benefits to your cat, boosting both physical and mental health. While it is important to consult your vet and follow dosage instructions, adding a little seaweed to your cat's diet can help it live a happier and healthier life. This small change in your cat's diet can have long-lasting effects.


As you can see Seaweed has some incredible benefits that may aid your cat. As always though if you have any concerns.  Please contact your local vet for appropriate amounts for your cat.  With anything a proper moderation of this superfood is probably the best thing to do with your cat.  Take care and please feel free to leave a comment below.

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