Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Can Cats Eat Dog Food? Vet-Reviewed Nutritional Facts & FAQ

Can Cats Eat Dog Food

Dog food and cat food look quite similar after you open the bags. The differences seem minimal when you compare apples to apples—that is, dry kibble dog food to dry kibble cat food. But just because they look the same doesn’t mean they are.

If you have a dog and a cat and you’re out of cat food, the occasional meal of dog food isn’t going to hurt your feline. But if it becomes a staple in their meal regimen, you could end up with a malnourished cat. Let’s take a closer look at dog food and how it can affect your cat.

divider 3 paws

Is Dog Food Safe for Cats?

If you’re only feeding dog food to your feline once, then yes, it’s safe. But that doesn’t mean it’s healthy. There are some primary differences between cats’ needs and dogs’ needs.

Dogs are facultative carnivores. This means that while they need animal protein in their diet, they are still able to digest plant matter to a certain extent and may temporarily sustain themselves by doing so if the need ever arises. However, they aren’t meant to be vegetarian or vegan on a long-term basis, and they aren’t omnivores either. When given a choice, dogs always favor meat over plant-based foods.

For a hungry cat, a meal or two of dog food isn’t likely to cause any major problems. It could potentially upset your cat’s stomach, but it won’t cause the same problems that could arise from continued feeding.

Differences Between Cat Food and Dog Food

If you take a look at the ingredients and nutrient profiles of popular feline and canine foods, you’ll notice some serious differences.

Dog-and-cat-eating-dry-food
Image Credit; 135pixels, Shutterstock

Taurine

Dogs’ bodies can make taurine. Cats, like human infants, do not have this ability (adult human bodies can make their own taurine). This means that, unlike dogs, cats need to get sufficient levels of taurine through the foods they eat. A cat that’s deficient in this essential amino acid can exhibit some serious side effects, including dilated cardiomyopathy or a weakened heart, impaired vision, and problems with digestion.

Because dogs can make the taurine they need, it’s rarely added to dog food. But cats require this nutrient, so it’s required to be included in cat food. You can supplement with taurine, but it’s much better for your cat to get adequate levels directly through the food they eat.


Protein

Many vets recommend a diet that consists of at least 45–50% protein for adult cats. Cats have no problem handling diets that are higher in protein. You’d be hard-pressed to find dog food containing that much protein. If you were to feed dog food to your cat for an extended period, even if it was high-protein dog food, it likely wouldn’t meet your cat’s needs and would cause deficiencies.


Vitamin A

Dog food often contains vitamin A, but not at the same levels as cat foods. Cats are unable to synthesize this vital nutrient, and if they’re low in vitamin A, they can develop a host of health issues. Vitamin A deficiency can result in unhealthy skin and coat, night blindness, deteriorated muscles, and more.

For cats eating a diet of high-quality feline food, vitamin A deficiency is rarely an issue. But dog food is lacking in vitamin A compared to cat food, and your cat is likely to be deficient in this vitamin if they eat dog food as a substitute for cat food regularly.

Calico cat eating
Image Credit: Jaromir Chalabala, Shutterstock

Arachidonic Acid

For felines, this is an essential omega-6 fatty acid that their bodies cannot synthesize. Although dogs also need this fatty acid, it isn’t considered essential for them, as their bodies are able to make this even if it’s not present in their diet. Food intended for dogs may not have this acid, leading to health issues for your cat.

Niacin

Niacin is yet another nutrient that cats derive solely from diet alone. Dogs are able to convert the amino acid tryptophan into niacin; cats cannot do so.


Flavor

The truth is that most cats won’t be attracted to dog food. Cats are known for being picky eaters. Conversely, dogs are known for eating out of the trash and ingesting nasty things like poop and puke. Ironically, dogs have several times as many taste buds as cats. While cats have just 470 taste buds, dogs have a whopping 1,700.

Cat foods are specifically made to appeal to a cat’s picky flavor preferences. As such, dog food is generally unappealing to them. Granted, you will find the occasional cat that likes to munch on dog food here and there, but by and large, they’re a rarity.

divider 2 cats

What Should You Do if Your Cat Eats Your Dog’s Food?

You just walked in and saw your cat eating out of your dog’s bowl. Now, you’re concerned for your furry friend’s health and you’re wondering what effects this meal could have on them. Don’t worry, dog food isn’t toxic for a cat. The problems arise when your cat is eating dog food in place of cat food because they won’t be getting all of the nutrients they need to remain healthy.

Can Dogs Eat Cat Food?

By now, you’ve probably determined that dog food isn’t a good long-term option for cats. If you’re curious about the appropriateness of cat foods for dogs, the answer is more or less the same. Cat food often contains all the nutrition a dog needs and isn’t toxic for dogs either. However, the issue with feeding dogs cat food is overnutrition.

The excess protein and fats that cats require aren’t necessarily beneficial for a dog. Since their bodies won’t store extra protein, the task of its elimination from their system falls to the kidneys. An excess strain on the kidneys can be detrimental in the long run.

Excess fat your dog doesn’t utilize will simply be stored for later use and might eventually lead to an obese pup. In addition, the micronutrient requirements of cats and dogs are different. Therefore, food intended for cats shouldn’t be given to dogs on a long-term basis.

divider 1 paws

Conclusion

If you need to feed your feline some dog food for some reason, then it’s not going to hurt them if you keep it to just a few meals or fewer. Prolonged feeding of dog food over cat food will result in a deficient cat that can develop a variety of health problems. But a single meal of dog food isn’t going to be a threat to your cat’s health, even though their taste buds aren’t likely to be interested.

Related Reads: 


Featured Image Credit: Catster.com

How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Can Young Cats Develop Diabetes? Our Vet Explains Signs, Treatment & FAQ

Diabetes is a complex metabolism condition affecting many animals, including cats. With estimates reaching 1% of the cat population 1, it’s easy to...

Why Is My Cat Sneezing? 8 Vet-Approved Reasons Behind the Behavior

Cats do all sorts of weird things. They’ll run around the house at 2 a.m., chasing nothing in particular. They’ll stop right in...

5 Egyptian Mau Mixed Breeds (With Info & Pictures)

The Egyptian Mau, characterized by its elegant spotted coat, stands as an emblem of Egypt’s rich history, symbolizing ancient civilizations and their connection...

5 Amazing DIY Cat Grooming Arch and Self-Groomer Plans You Can Make Today (With Pictures)

Most cat owners can relate to the issue of finding cat hair all over the house. While cats will groom themselves, it really...

More related

How to Get Flytrap Glue off a Cat: 4 Vet-Approved Steps

Glue flytraps do an excellent job of eliminating pesky flies, mosquitos, and other insects. Sometimes, these traps can accidentally get stuck to a...

Why Is My Cat Suddenly Aggressive? Vet-Reviewed Reasons

It can be extremely disconcerting for your cat to suddenly begin to exhibit behavior that is unusual for them, especially if your once...

The Cat Grass Conundrum: Clutch’s Fetish For Foliage

Hi, I’m Dr. Karyn! Read my introduction to learn more about me and meet my five hilarious cats: Clutch, Cyril, Alex, Zelda, and...

Can Cats Eat Bologna? Vet-Verified Nutrition Facts & Risks

You may not be able to make a bologna sandwich without your cat meowing at your feet, begging for some. Bologna has a...

Keep reading

10 Vet Reviewed Facts About Cat Anal Glands

If you’ve ever noticed a stinky, fishy smell coming from your cat or a swelling next to their anus, then you’ve likely noticed their anal glands. The anal glands contain chemicals that act as territory markers, although they do serve...

vet checking up a cat

What Is Cat Shrimping? Explanation With Pictures

Cats are interesting characters that can surprise us with their personalities and behaviors, no matter how well we think that we know them. What’s fun is following trends that cats set without realizing what they are doing. One trending example...

Cat Curl Up Sleeping

Why Is My Cat Hiding After a Move to a New Home? 3 Vet-Reviewed Reasons & Solutions

We’ve all been in a situation where we’ve just moved to a new house, and suddenly, the cat is nowhere to be found. Cats may hide for a while after a move, and there are several reasons for it. Though...

A cat hiding under a couch

Can Cats Eat Fish? Vet-Verified Benefits, Dangers & FAQ

Site after site claims you can safely feed fish to your cat, and you’ll even find many commercial cat foods that use fish as a protein. But is fish actually as safe for cats as we’re led to believe? The...

Can Cats Eat Fish

What Can Cats Drink Besides Water? 3 Vet-Approved Options

Did you know your cat probably doesn’t drink enough water? Urinary problems are the reason behind many vet visits, whether it’s treatment for bladder stones, cysts, or other problems falling under Urinary Tract Disease. Urinary problems are actually the leading...

What Can Cats Drink Besides Water

Why Do I Need to Clean My Cat’s Litter Box? 10 Vet Reviewed Reasons & Cleaning Tips

As a cat owner, you know that cleaning the litter box is definitely the least pleasant chore associated with caring for your feline friend. However, keeping your cat’s litter box clean is also one of the most important things you...

cat-pooping-outside-the-litter-box

Why Do Cats Sleep So Much? 6 Vet-Approved Reasons

Chances are that while you’re reading this article, it’s probably quite likely that your cat(s) are sleeping: on your lap, in the sink, next to the cozy cat bed that you purchased specifically for your kitty. Cats spend an excessive...

cat sleeping on the patio

Can Cats Eat Raw Eggs? Vet-Reviewed Health & Safety Guide

As cat owners, we often find ourselves wondering if our feline friends can indulge in the same foods we enjoy. As obligate carnivores, cats thrive on protein sources such as meat. Another good source of protein is eggs, but raw...

Catster_Can Cats Eat Raw Eggs_v1_Dec 4 2024