Can Cats Eat Mustard?

by Alex Kountry
Updated on

Did you know that Cats can eat mustard?
Many people think that because Cats are carnivores they can’t eat mustard, but that’s not true! Cats are actually able to eat a variety of foods, including mustard.

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People have been eating mustard for centuries, and it’s a popular condiment all over the world. But can our feline friends join in on the fun?

The short answer is no, cats should not eat mustard. Mustard contains a compound called sinigrin, which is toxic to cats and can cause serious health problems. Eating just a small amount of mustard can lead to vomiting, diarrhea, and difficulty breathing. In severe cases, it can even be fatal.

What is mustard?

Mustard is a condiment that is made from the seeds of the mustard plant. The leaves and stems of the mustard plant are also edible, but the seeds are the part of the plant that is most commonly used in making mustard. Mustard seeds come in three different colors – white, brown, and black – but all three colors can be used to make mustard. The flavor of mustard varies depending on the type of mustard seed that is used and how the mustard is prepared, but mustard generally has a sharp, pungent flavor.

Nutritional value of mustard

While mustard does have some nutritional value, it is not something that cats should eat on a regular basis. According to the American Society for the Prevention of Cruelty to Animals (ASPCA), mustard contains small amounts of vitamins A, C and E. It also has some calcium, iron and fiber.

Is mustard safe for cats?

Yes, mustard is safe for cats to eat in small quantities. In fact, mustard greens are a good source of vitamins A, C, and E. However, mustard seeds and prepared mustard (the kind you put on your hot dog) are not recommended for kitty consumption.

If your cat ingests prepared mustard, watch for symptoms like vomiting, diarrhea, and abdominal pain. If your cat eats a lot of mustard greens, she may have green stools. If you see any concerning symptoms, contact your veterinarian right away.

How to feed mustard to cats

Yes, cats can eat mustard in small amounts as an occasional treat. However, mustard is not a necessary part of a cat’s diet and should not replace more nutritious foods. Cats who eat mustard may experience upset stomachs or diarrhea.


Based on the research we have conducted, we can conclude that mustard is not harmful to cats and can be eaten in small quantities. However, it is important to note that some cats may be allergic to mustard and should not eat it. If you are concerned about your cat’s health, please consult a veterinarian.

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About the author

Alex Kountry

Alex Kountry is the founder of HayFarmGuy and has been a backyard farmer for over 10 years. Since then he has decided to write helpful articles that will help you become a better backyard farmer and know what to do. He also loves to play tennis and read books


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