Can Cats Eat Dog Food? What to Know About Cats and Dog Food

Can cats eat dog food — in any circumstances? What are the differences between cat and dog food, and how do you keep cats out of dog food (and vice versa)?

A cat and a dog eating together.
A cat and a dog eating together. Photography © chendongshan | iStock / Getty Images Plus.

Sometimes, it seems like cats just want to eat whatever food isn’t theirs — from the food that’s on your plate to the food that’s in your dog’s bowl. Obviously, you want your cat to eat his own food, but can cats eat dog food? And is it dangerous if your cat eats dog food?

Can cats eat dog food? Is it safe?

Can cats eat dog food? Photography © fotoedu | iStock / Getty Images Plus.

According to Emmy award-winning vet Dr. Jeff Werber, the good news about the question, “Can cats eat dog food?” is that if your cat eats dog food it’s not dangerous. Dr. Werber explains that while your cat won’t be immediately injured or made sick by eating dog food, it isn’t necessarily healthy for him.

What are the differences between cat food and dog food?

The next question you may have after, “Can cats eat dog food?” is “What’s the difference between cat and dog food (beyond the size of the kibble)?” It’s really about the protein levels. “Cats can’t live on dog food, as it doesn’t meet their needs for protein,” Dr. Werber says. He explains that the protein content in dog food is significantly less than the amount of protein that is included in commercial cat food diets and the level of protein that cats need.

Can cats eat dog food — if it’s an emergency?

Sometimes, even the most responsible cat parents run out of cat food. You thought you had more cat food than you did, and it’s the middle of the night so the pet store is closed, a freak snowstorm hits and you can’t get to the store, etc. So, can cats eat dog food if it’s an emergency?

Dr. Werber explains that dog food is not inherently dangerous for cats and that ultimately, “it will not hurt a cat if he eats dog food,” Dr Werber says.

So, in case of emergency it’s OK to give your cat dog food for one meal (assuming that your cat doesn’t have any other underlying health conditions or allergies). However, it’s not advisable that you feed your cat dog food on a regular basis.   

Keeping cats out of dog food and dogs out of cat food — feed on a schedule

Another question that pops up when thinking, “Can cats eat dog food?” — how do you keep your cat from eating his four-legged sibling’s dog food?

One of the consistent challenges of living in a multi-pet household involves pets trying to eat each other’s food. I share my life with three cats and three dogs, and each of mine have different diets including prescription foods, so keeping them out of each other’s food is a must!

Feed your cats and dogs two or three meals a day (depending on advice from your veterinarian) instead of free feeding (keeping food available at all times), unless there is a medical reason your veterinarian wants your cat or dog to consistently have food available. Feed your cats and dogs in consistent places for each meal. Create a feeding routine, and reward your dogs and cats for eating their own meals.

Keeping cats out of dog food and dogs out of cat food — feed in separate locations

Set your cats and dogs up for success by physically preventing them from getting into each other’s food. This further ensures that they only consume food that meets their nutritional needs.

This also supports positive and safe interspecies relationships between your pets and may prevent any kind of resource guarding if your cats and dogs aren’t worried that their food will be taken by a sibling.

To create physical separation, feed your cat on a cat tree or other raised location, which will keep dogs away from the cat food. Or, put different pets in different rooms (behind doors or baby gates) when meal time rolls around.

Thumbnail: Photography © chendongshan | iStock / Getty Images Plus.

Sassafras Lowrey is an award-winning author whose novels have been honored by the Lambda Literary Foundation and the American Library Association. Sassafras is a Certified Trick Dog Instructor and assists with dog agility classes. She lives and writes in Brooklyn with her partner, a senior Chihuahua mix, a rescued Shepherd mix, a Newfoundland puppy, two bossy cats and a semi-feral kitten. Learn more at

Read more about what cats can (and can’t!) eat on

4 thoughts on “Can Cats Eat Dog Food? What to Know About Cats and Dog Food”

  1. My kitties and corgis free feed
    They sometimes take a bite out of the other dish
    Everyone is healthy and happy

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