Skip to main content

Home About Us Find Spay-Neuter Trap Neuter Return Contact Us Donate

Is Ash Bad for Cats? Cat Food in Detail: Ash as an Ultimate Danger or a Complete Benefit for Your Pet?

Before you get a kitten and start taking care of it, it is inevitable to learn the essential basics. First of all, physical activity, fresh air, and love are the indispensable parts of the cat’s life. However, a healthy and well-balanced diet is another point you need to pay ultimate attention to. 

How is it possible to choose the best cat food? What components should be there? Why is ash used in cat food? What is the role of magnesium? These are the main questions inexperienced pet parents ask when they purchase their first bag or can of cat food. This time we strive to pay exceptional attention to ash content, which has been the subject of many discussions recently. 

Protein, carbohydrates, moisture, and fiber are the main components of any cat food, which are crucial for proper life and functioning of your pet. Additionally, minerals, such as magnesium, zinc, potassium, ash, and others, should be included in a diet. At this point, you can understand that ash is a beneficial ingredient, which is inevitable to a cat’s health. At the same time, it is vital to remember that it can be safe only if taken in moderation. 

What Is Ash in Cat Food?

Irrespective of the cat food you take, you will find the label “crude ash” on any. What does it mean? Is such food safe? The first thing you need to remember that it is not the usual ash we can see in our fireplaces. Instead, it is a group of nutrients, including fiber, fat, and protein, useful for cats. 

As specified by experts of the Breeders’ Club, ash is the end product of the cat food combustion, and its low concentration is fully safe for animals. Therefore, there are no reasons to worry about your pet; the moment you notice cat food ash is not the composition. 

Is Ash Bad for Cats? Pros and Cons of the Ingredient

If you are still concerned about the ash mentioned on the label of the cat food, you may relax. It is an organic mineral that is not dangerous for your pet. There are lots of different ideas about the advantages and drawbacks of the ingredient, but the outcome is always the same: ash is 100% safe if used in moderation. 


  • Is completely safe if taken in recommended amounts;
  • Is indispensable for excellent cat body functioning;
  • Causes no side effects if properly used. 


  • May cause digestion problems;
  • May increase the risk of urinary tract problems.

The Risks of FLUTD Development Caused by Ash

When the question “What is ash called in cat food?” is still bothering you, it is inevitable to understand the difference between crude and added ashes. The experts specify that ‘crude ash” is the term that refers to the concentration of minerals in food. Thus, when you see this sign, you should think about magnesium, phosphorus, and calcium . 

The normal amount of ash cat food should contain is around 10%. Some foods can have a lower index, ranging from 5% to 8%, while others may exceed 10%. Keep in mind that if the ash level is higher than 10%, such food may be hard to digest. As a result, your pet may suffer from blockage, diarrhea, and other stomach problems. 

Additionally, it is inevitable to pay attention to another significant topic pet owners are worried about. For many years, people related feline lower urinary tract disease with the high concentration of ash in the food animals used. Nevertheless, the results of the recent research prove that ash is a safe part of cat food, which cannot cause crystal formation and other urination-related problems. Instead, the pH level of the urine and hydration are the basic points that can enhance the risk of specific health problems in cats. 

Anyway, the cat parents should be attentive and cautious when switching to a new food. Contact your veterinarian before you change the diet and replace the usual food with a new form or brand. It will help you prevent unwanted outcomes and possible side effects. 


What brand of wet cat food is low in ash and magnesium?

The up-to-date market is growing fast, providing customers with an unlimited variety of high-quality and safe wet food options for cats. However, it is inevitable to be selective if you strive to feed your pet with the best food ever. Considering ash content in the food, there are numerous famous brands that offer goods low in ash and magnesium. Purina, Royal Canin, and IAMS are only a few cat food producers worth your attention. 

How to calculate ash in cat food?

Striving to make the right choice, a considerable number of customers are looking for an answer to the “What is ash content in cat food?” question. However, according to the vets and feline experts, this is not the most dangerous ingredient, so it cannot define the quality of the cat food. It has been proven that there is no relation between ash and feline lower urinary tract disease. Therefore, there is no need to count the amount of ash your cat consumes. 

How much ash is in IAMS cat food?

As mentioned on the label, the product contains around 8.5% ash, which is one of the lowest numbers when it comes to cat food. 

How much ash is in Friskies canned cat food?

Talking about Friskies, the content of ash is getting higher. According to the guaranteed analysis, a single can of wet cat food has approximately 10% of ash. 

How much ash in 4health canned cat food?

Similar to Friskies and a variety of other brands, 4health produced wet cat food with at least 10% of ash.

Feral Cat Fact: The vast majority of free-roaming catsĀ are not fully socialized and thus not adoptable.