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Can cats eat nori (unseasoned)?

A little

A fingernail-size piece of plain nori — seasoned seaweed is oily and salty.

How much

Up to per day 1g about 0.4 pieces · 1 full sheet ≈ 2.5 g

4 kg adult cat, treats ≤10% of ~200 kcal/day

PreparationPlain nori, torn tiny.

Why

Nori is very high in iodine, so generous daily amounts could affect the thyroid. Seasoned seaweed adds sesame oil and salt. A tiny bit is fine for cats that love the smell.

If your cat has a condition

  • Kidney disease A little High ratio, but this portion has only 8 mg phosphorus. Phosphorus 4,536 mg/1000kcal
  • Diabetes OK to give At this portion it is only 0.4 g of carbohydrate. Carbs 98% of calories
  • Heart disease (HCM) OK to give Low in salt. Sodium 860 mg/1000kcal
  • Urinary stones OK to give No specific stone concern known — water intake matters more.

Nutrition per 100 g

Nutrients per 100 g, with phosphorus also shown per 1000 kcal
Calories179 kcal
Protein44.42 g
Fat0.53 g
Carbohydrate44.04 g
Phosphorus812 mg 4,536 mg/1000kcal
Sodium154 mg
Potassium2246 mg

Source: Korea MFDS Food Nutrient Database — 김류_김밥용김_전체_말린것_대표_평균

SourcesReviewed 2026-10-24

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