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.

Vitamin B12 for Cats: 7 Vet-Approved Food Sources

cat eating food in the bowl

Vitamin B12, or cobalamin, is an essential nutrient for cats, having a vital role in multiple key body functions and processes. Cats cannot produce B12 and must get it from their food instead. Keep reading to learn about great food sources of vitamin B12 for cats. We also let you know the signs that your cat isn’t getting enough of this vitamin and what to do about it.

divider cat paws oct 2024

The 7 Food Sources of Vitamin B12 for Cats

1. Organ Meats

cooked beef liver
Image Credit: nadi555, Shutterstock

The liver and kidneys are two organ types of meat that are great food sources of vitamin B12 for cats. Organ meats are considered more nutritious than muscle meat overall, and wild cat species routinely eat these parts of their prey. Beef, lamb, and veal liver and kidneys are the highest in B12.  Try to buy organic or cleanly raised organ meat because toxins can build up in the liver and kidneys due to their function in the body. Also, only serve cooked liver and kidneys.


2. Clams

clam in its own juice
Image By: BearFotos, Shutterstock

Cooked or canned clams are another great food source of vitamin B12 for cats. They’re also high in protein, iron, and antioxidants. While you should never offer raw clams to your cat, avoid feeding them shellfish fried or seasoned with salt, spices, or onions and garlic. If your cat won’t eat clams, clam broth or juice is also high in B12. It’s also an excellent way to increase your cat’s liquid intake if they aren’t drinking enough water.


3. Sardines

boiled sardines on a white plate
Image By: syogo tatetsu, Shutterstock

In addition to being a great food source of Vitamin B12 for cats, sardines are high in fatty acids and are just an overall nutritious fish. It’s easy to feed sardines to your cat because they’re available canned. Sardines packed in oil can be high in fat and should be fed with caution or avoided entirely.

Look for sardines packed in water instead. If you want to offer fresh sardines, make sure you cook them thoroughly first. Raw fish should never be fed to cats because it may contain dangerous bacteria. It also has a compound that destroys another B vitamin, thiamine. Thiamine deficiency can cause dangerous neurologic problems.


4. Beef

roasted beef
Image Credit: Shutterbug75, Pixabay

Cats are true carnivores, meaning they can only process nutrients from animal food sources. Cooked, lean meats are among the best human food snacks you can give them. If you’re looking for a great meat food source of vitamin B12, beef is an excellent option. Lean cuts of beef are highest in B12, anyway, and the healthiest choice for your cat. Beef also contains several other B vitamins and other vital nutrients like zinc. To maintain the levels of B12 through the cooking process, try grilling or roasting the beef without using oils or spices.


5. Salmon

Half raw salmon fillet on the table
Image Credit: TheFarAwayKingdom, Shutterstock

As a common fish protein source in commercial cat food, salmon is a great source of vitamin B12 for your kitty. It is generally considered low in mercury, which is safer for your cat to eat. This fish is also a good source of protein and omega-3 fatty acids. Offer salmon to your cat in moderation because they may love it so much that they try to avoid eating their actual diet.


6. Eggs

hard boiled eggs
Image Credit: bluedog studio, Shutterstock

Cooked eggs are another excellent source of vitamin B12 for cats. Eggs are high in protein and contain vitamin D and vitamin B2. The yolk contains more B12 than the egg white, so offer your cat the entire egg for full nutritional benefits. Raw eggs may contain dangerous bacteria and should not be offered. Even if your cat doesn’t get sick from bacteria like Salmonella, they can be carriers and pass it to vulnerable humans, such as kids or the elderly.


7. A Balanced Cat Food

cat food in red bowl
Image Credit: Africa Studio, Shutterstock

The simplest food source of vitamin B12 for your cat is a balanced, commercially prepared cat food. In the United States, all cat food must meet basic minimum nutrition standards, including adequate levels of B12. That includes premium and grocery-store brands.

Homemade cat diets are not automatically balanced, even if they include some foods high in B12 that we already listed. If you want to cook for your cat, ask a veterinarian to help you formulate meal recipes that contain all the nutrients your cat needs, including B12.

Need veterinary advice but can't get to the clinic? Catster recommends PangoVet, our online veterinary service. Talk to a vet online and get the answers and advice you need for your cat without having to leave your living room — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

divider cat paws oct 2024

Signs Your Cat Isn’t Getting Enough Vitamin B12

While cat diets contain enough vitamin B12 for a healthy cat, there are times when eating this nutrient just isn’t enough.

Common signs that your cat is low in vitamin B12 can include:

  • Weight loss
  • Lethargy
  • Vomiting
  • Diarrhea

Interestingly, the most common cause of vitamin B12 deficiency is an intestinal disease that impacts the cat’s ability to absorb nutrients from their food.

If you notice these signs, have your cat seen by a veterinarian. There is a blood test that can check your cat’s B12 levels. If your cat does have low levels, your vet may suggest supplementing your cat’s normal B12 intake from their diet.

divider cat paws oct 2024

Conclusion

Before feeding your cat any new food, even one on this list that provides vital nutrients like B12, check with your veterinarian. Safe, non-toxic foods could still upset your cat’s stomach, so start by offering a small amount and monitoring your cat’s reaction. Ensure that most of your cat’s daily calories come from a balanced diet to receive all the nutrition they need, not just vitamin B12.


Featured Image Credit: Okssi, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.

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

10 Pet Friendly Hotels in Philadelphia (2025 Update)

Philadelphia is Pennsylvania’s largest city and is often touted for its rich history and deep connections to the American Revolution. Whether you are...

Fluid in a Cat’s Lungs: Symptoms, Care, & Treatment (Vet Answer)

Fluid in the lungs, also known as pulmonary edema, is a serious condition that affects felines. If your cat receives this diagnosis from...

Are Corn Plants Toxic to Cats? Our Vet-Approved Advice

The corn plant, Dracaena fragrans, goes by many names, including the ribbon plant, the dragon tree, and the cornstalk plant, but this plant...

How to Tell What Kind of Animal Killed Your Cat: 10 Vet-Reviewed Signs to Look For

We all know that cats are natural hunters, but they can also become prey to other animals at times. The thought of such...

More related

International Day of Veterinary Medicine 2025: History, Significance & More

International Day of Veterinary Medicine, celebrated on December 9th each year, is a day dedicated to honoring the invaluable contributions of veterinarians to...

Can CBD Help a Cat With Anxiety? Exploring Alternatives

There have been no scientific studies that investigate the impact cannabis has on pets, but many pet parents are turning to it for...

4 Amazing DIY Cat Fence Roller Plans You Can Create at Home (With Pictures)

It can be a tough balance between letting your cats explore the outdoors and keeping them safe. A simple fence isn’t enough if...

Persian Kittens For Sale in Oregon: Breeders List 2025

Excited Cats advocates for adopting before shopping, though we fully understand there are many reasons for seeking a breeder. So, we encourage it...

Keep reading

Smalls vs Nom Nom: Pros, Cons & Facts (2025 Update)

Disclaimer: Nom Nom has discontinued its fresh cat food recipe and is no longer taking orders. Nom Nom hopes to return to providing fresh food to cats in the future when they have more readily available high-quality ingredients. We have...

Smalls VS Nom Nom

Why Do Cats Put Things in Their Water Bowl? 6 Possible Reasons

It has been said that curiosity killed the cat, but in reality, their curiosity often keeps them safe. A cat’s curiosity leads them to investigate everything they encounter, from new smells to strange noises. This inquisitiveness often puts them in...

cat drinking water

Evolve Cat Food Review of 2025 : Recalls, Pros & Cons

Review Summary Crafted with premium, whole-food ingredients, Evolve cat food contains exactly the nutrition your feline needs to stay in peak health. It’s a bit pricey, but you’re getting quality recipes for what you pay. Granted, not all cats love...

Evolve Cat Food Review

Cat Cake Recipes: 5 Vet-Approved Homemade Treats

What’s more festive or celebratory than a decadent cake? We can’t imagine a birthday or holiday without one, and sharing these moments with our cats shouldn’t be an exception! For dedicated cat owners, we figured it was time to whip...

little ginger kitten eats wet food on a plate

Cat Toothache Pain: Vet-Reviewed Signs & How to Help

Did you know that February is Pet Dental Health Month? It’s true, and though this facet of our pet’s care is often forgotten about, it is very essential. Just as with humans, your cat’s dental health can affect their entire...

vet checking cats teeth

My Cat Won’t Eat Dry Food, Should I Worry? 5 Vet-Verified Reasons

Cat owners and toddler parents can agree on at least one thing: dealing with a picky eater is not easy. With preferences changing from one day to the next, feeding picky cats can be frustrating, but is it also a...

persian cat eating dry food

BFF (Best Feline Friend) Cat Food Review in 2025: Recalls, Pros & Cons

Review Summary The BFF (Best Feline Friend) cat food line is an affordable, healthy, and tasty cat food for your best feline friend. Produced by Massachusetts-based Weruva, the BFF line contains ingredients from around the world and is manufactured in...

Best Feline Friend Cat Food Review

Feliway Pheromone Spray Review of 2025: Recalls, Pros & Cons

Review Summary Feliway Pheromone Spray – A Quick Look Calms Cats During Travel The main thing that the classic Feliway Pheromone Spray does well is calm cats during travel. Most cats do not do well in the car, and this...

Feliway Pheremone Spray Review