Can Cats Eat Mustard? A Comprehensive Guide
Can Cats Eat Mustard? A Comprehensive Guide

The answer is no, cats should not eat mustard. While mustard is not considered toxic to cats, it can cause a number of gastrointestinal problems, such as vomiting, diarrhea, and abdominal pain. In severe cases, it can even lead to dehydration.

The reason for this is that mustard contains a number of compounds that are difficult for cats to digest. These compounds include:

  • Mustard seeds: Mustard seeds contain glucosinolates, which are converted to isothiocyanates when they are chewed or crushed. Isothiocyanates can irritate the lining of the digestive tract.
  • Vinegar: Vinegar is acidic and can upset the delicate balance of pH in the cat’s stomach.
  • Spices: Many mustards contain spices, such as turmeric, garlic, and onion, which can be toxic to cats.

Even small amounts of mustard can cause problems for cats. If you notice that your cat has eaten mustard, it is important to monitor them closely for signs of distress. If they show any of the following symptoms, contact your veterinarian immediately:

  • Vomiting
  • Diarrhea
  • Abdominal pain
  • Lethargy
  • Loss of appetite
  • Dehydration

Mustard is a condiment commonly used in various cuisines worldwide. It is made from ground mustard seeds, which are a good source of vitamins and minerals. However, while mustard may be safe for human consumption, it is not recommended for cats.

Why Cats Should Not Eat Mustard

There are several reasons why cats should not eat mustard.

  • Digestive upset: The primary ingredient in mustard is mustard seeds, which can cause gastroenteritis in cats. This can lead to vomiting, diarrhea, and abdominal pain.
  • Salt toxicity: Mustard also contains salt, which can be toxic to cats in high amounts. Salt poisoning can cause symptoms such as lethargy, vomiting, diarrhea, seizures, and even death.
  • Other harmful ingredients: In addition to mustard seeds and salt, mustard may also contain other ingredients that are harmful to cats, such as vinegar, spices, and flavorings. These ingredients can cause digestive upset and other health problems.

Can Cats Eat Mustard Greens?

Mustard greens are the leaves of the mustard plant. While mustard greens are not toxic to cats, they can cause digestive upset. This is because cats are not able to properly digest plant matter. As a result, eating mustard greens can lead to vomiting, diarrhea, and abdominal pain.

What to Do if Your Cat Eats Mustard

If your cat eats mustard, it is important to monitor them closely for any signs of distress. If you notice any vomiting, diarrhea, lethargy, or other unusual behavior, contact your veterinarian immediately.


In conclusion, mustard is not safe for cats to eat. If you are concerned that your cat may have eaten mustard, contact your veterinarian immediately.

The best way to prevent your cat from eating mustard is to keep it out of their reach. If you do have mustard in your home, be sure to store it in a tightly sealed container. You should also avoid giving your cat table scraps, as this can increase the risk of them accidentally ingesting mustard or other harmful foods.

If you are concerned about your cat’s diet, it is always best to consult with your veterinarian. They can help you create a healthy and balanced diet that meets your cat’s individual needs.

Similar Posts