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Can Cats Eat Dog Food? | Nutrition Facts & Feeding Risks

Can Cats Eat Dog Food? A Very Common Question

The short answer is yes, a cat can eat a small amount of dog food without experiencing toxicity or any long term effects.

However, the more detailed answer lies in the fundamental differences between feline and canine dietary needs. While a small taste of dog food is unlikely to harm your cat, it certainly won’t support their overall health and well being.


Here’s what you need to know about proper Cat Nutrition and why feeding dog food to cats regularly is not recommended.

A creative cartoon style image showing a cat with a thought bubble containing images of fish, meat, and a dog food bowl with a big question mark.

Can cats eat dog food?

Yes, but only as a temporary, last-resort option. Can Cats Eat Dog Food? A stolen bite from the dog’s food bowl isn’t a cause for panic, but it’s not a suitable long term solution. Cats have specific nutritional needs, and regularly consuming dog food can lead to serious health consequences. While a one time snack might not harm them, feeding dog food consistently fails to meet essential cat needs. It’s important to ensure both cat food and dog food are available in households with cats and dogs to support each pet’s well being and proper diet.

Why is dog food bad for cats in the long term?

While cats and dogs may share some similarities, their dietary needs are vastly different. Cats are obligate carnivores, meaning they require a diet rich in meat to meet their nutritional needs and function properly. Unlike dogs, cats cannot synthesize taurine or produce essential nutrients like arachidonic acid on their own, making it crucial for their diet to come from balanced cat food. On the other hand, dogs are omnivores and can thrive on a more varied menu, including meat, grains, and vegetables.


Although a cat may occasionally nibble on grains or vegetables, dog food is not suitable for their long term health. It lacks the necessary amino acids and high taurine levels that cats need to maintain optimal well being. Feeding a cat dog food consistently can cause health complications, such as nutrient deficiencies, and may even lead to Obesity in Cats due to the improper balance of fats and proteins. Providing species appropriate cat food is essential to ensure your feline stays healthy and thrives.

A visually striking split image showing two bowls side by side one filled with cat food and the other with dog food.

Differences Between Cat Food and Dog Food

Cat food and dog food are carefully formulated to meet the unique dietary needs of each species. Since cats and dogs have different nutritional needs, their food contains distinct ingredients and nutrient levels. While it may be harmless for a cat to have a small taste of dog food, it’s not advisable to make it a regular part of their diet.

Here are some of the key differences between these two types of pet food.

Vitamins

Vitamin A is another essential nutrient that cats are unable to produce on their own and must obtain through their diet. Although dog food may include vitamin A supplements, it does not contain the high levels required to meet a cat’s specific nutritional needs.

A deficiency in vitamin A can lead to cats experiencing:


  • Vision Problems.
  • Poor Coat Condition.
  • Weakened Immune System.
  • Delayed Growth in Kittens.
  • Reproductive Issues.

Taste

Cats and dogs experience taste in very different ways. Unlike dogs, cats lack the ability to sense sweetness, and their overall taste perception is much more limited. One key difference is the number of taste receptors, cats have only 470 taste buds, while dogs have around 1,700. For comparison, humans have over 9,000 taste buds, making cats far less sensitive to a wide range of flavors.


Because of their limited taste perception, cat food is specifically designed to be highly palatable to encourage even the pickiest eaters to consume it. Interestingly, it's rare for cats to show much interest in dog food, as they generally find it unappealing. Dogs, on the other hand, often love the rich, high protein content found in cat food, which explains why they are more likely to sneak a bite from a cat’s bowl.

A sleek British Shorthair cat sitting next to an open bag of dog food, staring at it with a puzzled expression.

Protein

Cats are obligate carnivores, meaning they require a diet with significantly higher protein levels than what’s typically found in dog food. While a few specialized dog food brands may offer higher protein content, even these fall short of providing the essential protein cats need to maintain their health. Feeding your cat dog food regularly can result in serious health complications due to the lack of adequate nutrients.


On average, most dog foods have an “As-Fed” protein content ranging from 18-26%. However, cats require a much higher protein intake to function properly and avoid deficiencies. For optimal feline nutrition, experts recommend cat food with a minimum of 30-34% protein on an “As-Fed” basis. Additionally, supplementing with high protein canned cat food containing 40-50% protein is a great way to meet your cat’s unique nutritional needs and keep them healthy.

Arachidonic acid

Arachidonic acid is a vital fatty acid that cats cannot produce on their own, making it an essential component of their diet. Since dogs can naturally synthesize this nutrient, dog food typically isn’t supplemented with arachidonic acid, meaning it won’t meet a cat’s dietary requirements.

A modern, infographic style image showing a cat surrounded by a balanced diet chart, including essential nutrients like taurine, protein, and fats.

Taurine

Cats, like humans, are one of the few mammals that cannot produce taurine naturally, making it an essential nutrient that must be obtained through their diet. Without sufficient taurine levels, cats are at risk of serious health complications that can impact their quality of life.


A deficiency in taurine can cause a range of health problems in cats, including:


  • Weakened hearts (dilated cardiomyopathy).
  • Loss of vision.
  • Digestive issues.
  • Weakened immune system.
  • Reproductive problems.
  • Developmental delays in kittens.
  • Respiratory issues.

All commercially available cat food is fortified with taurine to ensure cats meet their daily nutritional needs. However, dog food rarely contains added taurine, making it unsuitable for cats and putting them at risk of serious deficiencies if fed regularly.

Niacin

Including niacin in a cat’s diet is essential because cats are unable to produce this vital nutrient on their own.


Animal tissue is the primary source of niacin in cat food, whereas plants contain only minimal amounts. Cat foods with a lower content of animal based ingredients and a higher percentage of plant based components, such as grains, may fail to provide the niacin levels necessary to support a cat’s nutritional needs. Ensuring your cat’s diet is rich in high quality animal proteins is crucial for maintaining their overall health and preventing deficiencies.

A cute and funny image of a cat sitting next to a dog bone, looking uninterested or turning its head away.

Calories

Cat food contains more calories due to the higher protein requirements cats need to stay healthy, which is another key reason why feeding dog food to cats over time can have negative effects on their health and well-being, potentially leading to nutritional deficiencies and long-term health complications if their dietary needs are not properly met.

Size

Portion size is another key difference between dog food and what your cat is accustomed to. Cat food is typically served in smaller portions, and overfeeding your feline with the larger servings of dog food can lead to overeating and potential health issues, including weight gain and digestive problems that can impact their overall well being.

A veterinarian holding two small dishes one with cat food and one with dog food explaining the differences.

How do I get my cat to stop eating dog food?

If your cat keeps sneaking into the dog’s food bowl, there are several steps you can take to ensure they’re eating the food that best meets their nutritional needs. A simple "out of sight, out of mind" approach can work wonders, keeping the dog food bowl out of reach will help your cat focus on their own cat food. Creating physical distance between the two feeding areas, or even feeding your pets in separate rooms, can further reduce the temptation for your feline friend to sample their housemate’s dinner.


Although dog food isn’t considered toxic or harmful to cats, it’s essential to ensure it doesn’t become their go to meal, as it lacks key nutrients cats need to stay healthy.

Takeaway Points

Here are the main takeaway points for "Can Cats Eat Dog Food?"

1. Cats and Dogs Have Different Nutritional Needs

Cats are obligate carnivores that require a diet high in protein, taurine, and essential fatty acids, which dog food does not provide in sufficient amounts.

2. Dog Food Lacks Key Nutrients for Cats

Essential nutrients like taurine, arachidonic acid, and vitamin A are missing or present in low amounts in dog food, making it unsuitable for long-term feeding.

3. Feeding Dog Food to Cats Can Cause Health Issues

Regular consumption of dog food can lead to health complications in cats, including heart problems, vision loss, digestive issues, and nutritional deficiencies.

4. Portion Sizes and Calories Differ

Cat food is higher in protein and calories, with smaller portion sizes to meet feline needs. Overfeeding cats with dog food can cause obesity and digestive problems.

5. Keep Dog Food Out of Reach

To prevent your cat from eating dog food, feed pets in separate areas or place their food bowls in different locations to reduce temptation and ensure they eat the right food for their species.
Kelly Rushton with her cat Eddie Stafford.

Kelly Rushton

Meet Kelly Rushton, a dedicated cat enthusiast and proud owner of Feline Fancy Ltd. With a heart as big as her household, Kelly is the loving mum to 10 Charming Ragdoll Cats . In her world, felines reign supreme, and she brings professionalism and warmth to everything she does. Through her blog, Kelly shares her wealth of knowledge and experiences, offering insights into cat care, behavior, and the joy of living alongside these majestic creatures.


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