Get

In Your Inbox

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

6 Food High in Magnesium for Dogs: Vet-Reviewed Facts & FAQ

dog eating in a food bowl

Like humans, dogs require essential minerals and vitamins to function. Magnesium, along with calcium, phosphorus, and potassium, is an essential macromineral. It’s important for bone formation, muscle, and nerve function. Magnesium must be included in the diet in sufficient amounts to avoid deficiencies. Commercially available complete dog foods contain enough magnesium for healthy dogs. A lack of magnesium in a dog’s diet can occur for various reasons, including chronic diarrhea, kidney failure, and diabetes.

This article examines magnesium-rich foods. However, not all of these foods are suitable for all dogs, depending on their age and health condition. Always speak to a vet before adding additional foods to your dog’s diet, especially if your dog is showing any signs of illness.

Dogster_Website dividers_v1_Jan 18 2024-03

Top 6 Magnesium-Rich Food Sources for Dogs

1. Fish

Cooking Salmon
Image Credit: Bakhrom Tursunov, Pixabay
Types: Mackerel, salmon, pollock
How to Prepare: Cooked and plain

You can select a fresh, boneless fish fillet, but check it for tiny bones before cooking it. Then, you can grill, poach, bake, or steam it without oil, pepper, salt, or onions and garlic1, which are toxic to dogs2. The fish’s fins, head, bones, tail, and scales shouldn’t be included because they pose a choking hazard and risk damage to the gastrointestinal tract.

It is important to avoid feeding your dog raw fish. Raw or undercooked fish can carry harmful bacteria such as salmonella and listeria, which are harmful to dogs and humans, especially children or people with compromised immune systems.


2. Organ Meats

beef liver on wooden board
Image Credit: Sergey Lapin, Shutterstock
Types: Liver, heart, kidneys
How to Prepare: Cooked or raw

Organ meats like liver, heart, and kidneys are rich in magnesium. The liver should be fed in small amounts and not every day. It contains a considerable amount of vitamin A, and consumption of large portions can lead to vitamin A toxicity.

If you serve raw organs, it is important to be aware that bacteria such as salmonella, E. coli, and listeria are commonly found in raw meat. Therefore, it’s crucial to take precautions when handling and feeding raw meat, such as washing your hands after touching it and cleaning every surface it touches. Raw food is especially hazardous to children or people with compromised immune systems.

You don’t need to feed your dog organs every day. Instead, aim for a variation in their diet. If this is the first time your dog has had raw meat, start with small amounts and gradually increase them.


3. Whole Grains

brown rice
Image By: Bom taraissara, Pixabay
Types: Whole wheat, brown rice, barley
How to Prepare: Follow instructions and keep plain

You can prepare the grains similarly to how you cook them for humans; for example, you can boil rice in water. Avoid adding other ingredients like dairy or fats. Once it’s prepared, you can add the rice to your dog’s food. You can also serve a small portion as a treat if your dog enjoys it. If feeding as part of a home-cooked diet, follow a recipe from a veterinary nutritionist to ensure your dog’s diet is balanced.


4. Beans

green beans
Image Credit: flockine, Pixabay
Types: Black beans, green beans
How to Prepare: Cook black beans and serve fresh green beans

Beans can be prepared for dogs the same way they’re cooked for people. Dogs can have beans that have been soaked and then cooked, but they shouldn’t consume uncooked beans because they’re nearly indigestible.

Green beans are also a good option; despite their name, they aren’t in the bean family. You can serve them fresh or cooked, but avoid canned beans since they generally have added sodium and preservatives. The ideal option is to purchase fresh beans from the grocery store, but if you choose flash-frozen green beans, steam or microwave them to thaw them out until they’re ready to cook.


5. Vegetables

sliced cucumbers
Image Credit: monicore, Pixabay
Types: Cucumber, spinach, peas
How to Prepare: Depends on the vegetable

Cucumbers are an excellent treat for your dog because there are only 8 calories per ½ cup. Make sure you cut the cucumber into manageable sizes, especially if you have a small dog or one that likes to wolf down their meals. The best way to prepare spinach for your dog is to steam it. Boiled spinach loses most of its nutrients, and raw spinach is hard to digest.

When you steam it, keep it plain and chop it so it’s easier for your dog to digest. You should only add small amounts of spinach to your dog’s diet since too much can damage the kidneys or cause digestive problems. Green peas are a healthy snack, and you can cook frozen, fresh, or thawed peas. Avoid canned peas since they have too much sodium.


6. Fruits

cantaloupes
Image Credit: PublicDomainImages, Pixabay
Types: Bananas, cantaloupe, pumpkins
How to Prepare: Raw

You can serve several nutritious fruits to your pup. Bananas are a healthy snack you can mash up in your dog’s food, stuff into a dog toy like a Kong, or slice and freeze. However, it’s best to avoid the peel; while it’s not toxic, it can be difficult to digest and could cause a blockage.

You can also cut up a cantaloupe into half-inch pieces and feed them to your dog. Make sure you remove the rind and seeds. If your dog is a little fussy, you can mash it up and add it to their food. Cooked pumpkin ( avoiding the stem, leaves, and skin) is safe for dogs and a source of magnesium, among other nutrients. You can also serve canned pumpkin as long as it is plain. Avoid pumpkin blends and mixes, such as pumpkin pie filling, which contains other ingredients that can harm dogs.

Remember, fruits are higher in sugar, so they should only be an occasional treat.

Frequently Asked Questions

Will My Dog Get Magnesium From a Commercial Dog Food Diet?

Magnesium is an essential mineral, and complete and balanced commercial pet foods should contain the right amounts to keep your dog healthy. There should be a breakdown of all the vitamins and minerals on the packaging, but you can speak to your vet if you have any concerns.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the personalized advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content Savings V1

What Are the Signs of Magnesium Deficiency?

Magnesium deficiency, also known as hypomagnesemia, is rare and only occurs in very sick dogs. Sometimes, it doesn’t cause many signs, but low magnesium can worsen other conditions and lead to low blood levels of other important electrolytes such as potassium and calcium.

Signs that might be seen include:
  • Difficulty walking
  • Heart arrhythmia ( abnormal rhythm)
  • Lethargy/abnormal behavior
  • Loss of appetite
  • Muscle pain
  • Muscle weakness/trembling

Can Dogs Suffer From a Magnesium Overdose?

Excess magnesium in a dog’s body is known as hypermagnesemia. Conditions that can be associated with excess magnesium in the blood include kidney failure, Addison’s disease, and hypothyroidism. Possible signs that your dog is suffering from hypermagnesemia are:

  • Low heart rate
  • Hypotension
  • Muscle weakness
  • Nausea
  • Respiratory depression
  • Vomiting

If your dog’s magnesium levels are high, they are at a higher risk of cardiac arrest, so you must contact a vet if you notice any of these signs.

Dogster_Website dividers_v1_Jan 18 2024-03

Conclusion

Magnesium is a very important mineral in your dog’s diet. If your dog is on a good quality complete dog food, they should be consuming the right amount. You can feed your dog various foods if you’re considering introducing more magnesium into their diet. It’s vital to include a vet in this decision. Any changes you make to your dog’s diet should be discussed with a vet to ensure it’s a good idea. Too much of anything, even something healthy, can become harmful, so you must serve the correct portions.


Featured Image Credit: dmytro Zinkevych, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* 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 Dogster for pet parents!

Your feedback really matters.

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

Join the conversation

2 Responses

    1. Hello Karen,

      thank you for your question and sorry for a bit of a late reply. The specific dosage of food varies for ever dog, so this is something that should be consulted with a veterinary nutritionist. If you would like to talk to a veterinarian about this, I could recommend you to book an appointment with one of our professional veterinarians from PangoVet veterinary telehealth service at https://www.pangovet.com. They will gladly consult your dog's diet and nutrition and let you know what should the proper dosage be, specifically for your pup.

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

How Dogs Choose Their Favorite Person & Signs That You’re the One

Each of our four dogs has a distinct favorite person in our family. How does this happen?...

Hooray For National/International Dog Day!

Some of you might argue that every day is dog day, and that certainly holds true in our household, but if you’ve ever...

16 Best Dog Breeds for Seniors & the Elderly (With Info & Pictures)

Dogs are great companions for all stages of life: childhood, adulthood, and the golden years. Studies have shown that owning a dog can...

Can Dogs Have Onion Rings? Vet-Verified Facts & FAQ

You love giving your dog a bite of your food every now and then as a special treat, and most of the time,...

More related

Korean Jindo Dog Breed Info: Pictures, Temperament & Traits

The Korean Jindo is a unique dog breed that developed on an island off the coast of South Korea. These medium spitz-type dogs...

Basset Retriever (Golden Retriever & Basset Hound Mix): Info, Pictures & Care

The Basset Retriever is a mixed breed, a cross between the unflinchingly loyal Golden Retriever and the intelligent Basset Hound. With a combination...

Responsible Pet Owners Month 2025: When It Is & How It’s Celebrated

If you’ve researched getting a new pet, you’ve probably heard the phrase “owning a pet is a big responsibility.” But what exactly does...

Australian Cattle Dog (Blue Heeler): Info, Pictures, Care & More

It takes determination, intellect, and physique to excel as a herding dog, especially in Australia’s harsh climate and rugged terrain. When ranchers first...

Keep reading

What Can Shih Tzus Eat? Vet-Approved Feeding Guidelines

Anyone who’s lived with a Shih Tzu can attest to the fact that it’s really hard to resist feeding them when they’re giving you the sad, puppy dog eyes. These toy breed dogs have big personalities, and they’re exceptionally talented...

Hungry Shih Tzu puppy holding an empty bowl

10 Best Canned Dog Foods for Picky Eaters in 2025: Reviews & Top Picks

While it can be a mystery as to why some dogs are picky, finding dog food that a picky dog enjoys can feel like an even greater mystery to solve. Many dog owners have found solutions with meal toppers and...

shih tzu dog getting wet food from owner at kitchen

Can Dogs Eat Capers? Vet-Reviewed Nutrition Facts & FAQ

You love your dog, so you want to give them treats every now and again, and sometimes those treats are your own food. A lot of the time, depending on the food, this is (mostly) fine for your pet. But...

Can Dogs Eat Capers

Can Dogs Drink Wine? Vet-Verified Risks & FAQ

If you enjoy relaxing with a glass of wine in the evenings, you might feel inclined to give your dog some. Their adorable begging as you sip the wine could make you question whether a small sip could do them...

Can Dogs Drink Wine

Can Dogs Eat Parsnips? Vet-Verified Nutrition Facts, Risks & Serving Tips

Parsnips may have a small fan club. They aren’t as popular as other vegetables in the Apiaceae family, such as carrots and celery. Some think the former are sweeter, but parsnips have a slight edge. Nevertheless, these vegetables pack a...

Dogster-Can-Dogs-Eat-Parsnips

Can Dogs Eat Fish? Vet-Verified Facts & FAQ

Though fish is most commonly associated with cats, many dogs love it, too. If your dog goes bonkers for a fishy treat, they’re in luck—in most cases, dogs can safely eat certain types of fish as long as they’re prepared...

Can Dogs Eat_Fish

Can Dogs Eat Gingerbread? Vet-Verified Nutrition Facts & Safety Guide

Gingerbread is a holiday staple many people enjoy for the flavor and nostalgia. While dogs can eat certain holiday foods safely, it’s not recommended for dogs to eat gingerbread or gingerbread cookies. Small amounts of ginger may be okay for...

Can Dogs Eat Gingerbread

How Much Does The Farmer’s Dog Food Cost? 2025 Pricing Update

When you want to give your dog food that’s the best of the best, fresh is the way to go. But we all know that fresh food costs more than traditional kibble. So, how much does a food like The...

Finny with the farmer's dog food