Yes cats can eat herring

Herring are packed with omega-3 fatty acids which are great for your cat’s health. Be careful to remove all bones as these can be a choking hazard. You may want to consider mincing raw herring or giving fermented herring in small amounts.

Cats should not be fed smoked or cured herring, due to its high salt content and additional ingredients such as seasoning and spices that can cause irritation to their digestive systems.

Fish cats can eat guide.