Can cats eat seaweed?

Seaweed might not be the first treat that comes to mind for cats, but in small amounts it can offer some health benefits. Learn when seaweed is safe for cats, what to watch out for and why moderation is key to keeping your cat healthy and happy.

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Yes, cats can eat seaweed in very small amounts . Seaweed might seem like an unusual addition to your cat’s diet, but in trace amounts, it can be safe and even beneficial. It’s a natural source of vitamins, minerals, and fibre, and can help support their overall health.

But caution is key:

  • Seaweed (particularly kelp) is high in iodine, which can contribute to thyroid disease in cats.
  • Some store-bought seaweed products contain excess salt or additives.
  • Always check the ingredient list and speak to your vet before offering seaweed to your cat.

Benefits of seaweed for cats

Seaweed contains several nutrients that may be helpful for your cat’s health, including:

  • Iodine, calcium, and magnesium
  • Vitamins B, C, and E

Note: While seaweed also contains vitamin A, plant-based vitamin A can’t be utilised by cats. This is more beneficial to humans.

When to avoid seaweed

Seaweed should not be given to cats with:

  • Thyroid conditions
  • Kidney issues
  • Sensitive stomachs

In all cases, speak to your vet before adding anything new to your cat’s diet.

Looking for more advice on what your cat can and can’t eat? Explore our helpful blogs on:

Can cats eat pork?

Can cats eat dog food?

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