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Can Guinea Pigs Eat Spinach? (Serving, Risks & More)

Spinach is a leafy green vegetable which contains tonnes of nutrients essential for the body. But can we share this superfood with our guinea pigs as well? Can guinea pigs eat spinach? How much? Let’s find out!

Leafy greens like spinach, kale, cabbage are an excellent source of Vitamin C and other essential nutrients for our guinea pigs. However, you should serve spinach in moderation as it contains calcium and oxalate acid, which can be terrible if fed in excess.

Vegetables are an essential part of a guinea pig’s diet. A cup of fresh vegetables of at least three or more variety needs to be served to our guinea pigs daily.

As hay alone cannot keep up with all the nutrient needs of our guinea pigs, serving them with fresh vegetables will help them achieve a balanced diet.

Good quality hay are must for our guinea pigs. I personally love these farm fresh hay from small pet select. They are really nutritious.

In this article, I have thoroughly described the health benefits of spinach, the ill effect of the same along with suggested feeding, and much more. Kindly continue to read till the end to find out all about it in detail.

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List of 70+ Veggies that guinea pigs can & cannot eat.
List of 70+ Fruits that guinea pigs can & cannot eat.

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Nutrition in spinach

If you watched some cartoons in 1990, you might be familiar with Popeye the sailor man who used to eat a can of spinach and get superpowers.

That might be just a cartoon, but it really represents how good spinach is for the body. Spinach is a superfood with lots of vitamins. Let’s learn about it in detail.

Can guinea pigs eat spinach
Picture Credits: LILI & FRIENDS, Instagram Handle: guineapig_lili
Source: USDA National Nutrient data base
Vitamin C
28.1 mg/ 100 g
Vitamin A 9377 IU
Vitamin K483 mcg/ 100 g
Calcium99 mg/ 100 g
Phosphorous49 mg/ 100 g
Potassium558 mg/ 100 g
Fiber2.2 g/ 100 g
Sugar0.42 g/ 100 g
Protein2.86 g/ 100 g
Carbs3.63 g/ 100 g
Calories23 Kcal
Fat0.39 g/ 100 g
Water91.40 g/ 100 g

Spinach is an excellent source of Vitamin A, Vitamin C, and many other vitamins in small proportion.

These vitamins are essential for guinea pigs as they help in developing a robust immune system, Improves vision, promote healthy bones and muscles, and overall contribute towards healthy growth.

It also has a good share of iron, Magnesium, zinc, and potassium along with many other minerals in small quantities.

These minerals are excellent as iron contributes towards better vitamin absorption, Magnesium and zinc contributes towards healthy muscle and strong immunity, and potassium helps in fluid balance and also prevent kidney stones in the body.

Spinach is also low in sugar and calories, which makes them a great source of vitamins without worrying about the extra carbs.

Low sugar is an added advantage. They also contain a high amount of calcium and phosphorous, which is necessary for a young and growing body for the healthy development of bones and teeth.

Thus as a whole, we can say Spinach is a bundle of Vitamins and minerals with very low carbs and sugar which helps in fulfilling a lot of nutrient needs of the body.

Is spinach bad for guinea pigs?

No, spinach is absolutely perfect for our guinea pigs until and unless it is served in a limited quantity. Although, serving spinach in a high quantity can often lead to various diseases in guinea pigs. 

Let us learn in detail about it. Spinach contains a high amount of calcium and phosphorous in it. Although calcium and phosphorous are needed by young and pregnant guinea pigs too much calcium is terrible for our guinea pigs. 

High calcium diet in the long-term can cause various health diseases in guinea pigs like bladder stones/sludge. 

Spinach also contains a high amount of oxalate which usually binds with calcium to form stones. This is one of the while serving Spinach; High calcium along with high oxalate acid often leads to bladder stones in guinea pigs. 

Oxalates also bind with Vitamins and minerals and avoid absorption of the same in the body. Thus high oxalate in the food can cause several health issues in our guinea pigs.

Guinea pigs also have a very delicate digestive system, and feeding too much spinach can result in diarrhea and other gastrointestinal diseases.

Is spinach good for guinea pigs?

Can Guinea Pigs Eat Spinach?

Yes, spinach contains some high vitamins and minerals which is essential in guinea pig’s diet. 

Guinea pigs cannot synthesize their own vitamins and minerals, so serving them with a diet rich in Vitamins and minerals is the must. 

Guinea pigs often are diagnosed with scurvy due to a lack of vitamin c in their diet. Vitamin C with other vitamins is essential for the overall healthy growth of guinea pigs. 

Spinach also contains dietary fiber which is beneficial for the guinea pigs digestive system. Guinea pigs need a diet rich in fiber to keep up their digestive system well maintained.

Serving a food rich in fiber is beneficial for guinea pigs. Spinach also contains a fair share of essential nutrients like iron, magnesium, zinc, etc. which is crucial for proper development of body, absorption of nutrients, good vision, and robust immune system. 

So, as a whole guinea pig can get a decent amount of nutrients from spinach. But at the same time, the quantity of serving needs to be monitored. Let us look in detail about the serving size of spinach for guinea pigs.

Guinea Pig eating spinach

How much spinach can guinea pigs eat?

Guinea pigs can eat only a small portion of spinach, considering the high calcium and Oxalate content in it.

What I have seen vet recommending is a small leaf, or a leaf of baby spinach is just the right quantity of spinach for our guinea pigs. 

Although spinach is a leafy vegetable but considering the downside of it, we must limit its amount so that our guinea pigs can take advantage of its nutrients without having an ill-effect from the same.

Can guinea pigs eat spinach daily?

Definitely guinea pigs cannot eat spinach every day. It is recommended that we feed our guinea pigs with spinach only once a week or so. 

Trying to feed the spinach regularly can be bad for their health. Although young and pregnant guinea pigs can be fed a small leaf up to twice a week considering you mix it up with other low calcium veggies like cucumber, lettuce, etc.

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Can guinea pigs eat spinach stems?

No, Guinea pigs cannot eat spinach stalks. Spinach stalks are fibrous and stringy, which makes them tough to swallow. Even human beings have problems eating those let alone our guinea pigs. 

Spinach stalks can often lead to choking hazards in guinea pigs. Always ensure to remove any stem in spinach before serving it to our guinea pigs. Only the leaf portion is to be served to them. 

Vegetables are an essential part of a guinea pig’s diet but at the same time preparing it in the right way is also necessary. If you do not make your vegetables right then, it might have an ill-effect on our guinea pigs.

Also Read:
What Plants Are Toxic To Guinea Pigs? (With Helpful Images)
What Foods Are Harmful To Guinea Pigs? (Toxic Food+Food To Avoid)

Can guinea pigs eat baby spinach?

Yes, Guinea pigs can eat baby spinach for sure. Baby spinach contains less of Calcium and Oxalate, which makes them an excellent choice for our guinea pigs. 

Although they are better than regular spinach, the serving size should remain absolutely safe. The level of calcium and Oxalate is still on the higher side. So avoiding overfeeding would be good for your guinea pigs. 

Can Guinea pigs eat Frozen spinach?

Yes, guinea pigs can eat frozen spinach although we cannot toss a leaf of spinach right out from the refrigerator to the guinea pigs. Cold food can cause diarrhea and other issues with guinea pigs. 

It is recommended to thaw the food and bring it to room temperature before tossing it in guinea pigs cage.

Also, remember to wash the spinach properly before serving as they might contain some harmful particles attached to them that can have an ill effect on guinea pigs.

Can Guinea pigs eat cooked spinach?

No, Guinea pigs cannot eat cooked spinach. Cooking food often leads to the loss of vitamins and minerals. Also, the long fiber breaks down, resulting in food high in carbs and more robust for guinea pigs to digest. 

Also, cooking involves adding salt, spices, cooking oil, or any other ingredients which are a complete No-No for guinea pigs.

Guinea pigs can suffer from serious digestive diseases as their digestive system is very delicate. So, serving them with good food is critical.

What are other healthy alternatives to spinach in guinea pig’s diet?

Although spinach is excellent food, there are some downsides to that. Guinea pigs can suffer from serious health diseases like bladder stones/sludge when they intake a high calcium diet.

So, feeding a spinach leaf once in a while can be really beneficial, but it cannot be done daily.

How to Start Your Guinea Pigs on Vegetables

So, let us look into some healthy alternatives to spinach in their diet.

Cucumber: Cucumber is an excellent addition in a guinea pigs diet. Guinea pigs can eat cucumber regularly, and they provide lots of hydration in summer as well as other vital nutrients.

Zucchini: Zucchini is another summer squash that makes it to the top list in the guinea pig’s diet. Guinea pigs can eat zucchini almost every day, considering the quantity served is limited. Zucchini is another excellent source of lots of vitamins.

Lettuce: Lettuce is another excellent vegetable that can be added to a guinea pig’s diet. Lettuce can be fed to guinea pigs daily, and it contains great nutrients as well.

How To Prepare Spinach For Your Guinea pigs?

can guinea pigs eat spinach every day

So, let’s learn how to prepare spinach for guinea pig:

  • First of all, we must ensure we choose and get only fresh spinach for our guinea pigs. Don’t get a bunch of yellow, wilted, and mushy leaves. Those are bad for our guinea pig’s health.
  • The second step is to wash the spinach leaves properly. Spinach leaves might carry traces of soil and chemicals that are bad for your guinea pigs. Cleaning them properly is essential to get rid of them completely. Once done you can use a salad spinner(Amazon) to dry it off or let them dry in a kitchen towel while you prepare other veggies.
  • The third step is to slice the stem/stalk of spinach away. Spinach stalks are tough to eat and can lead to choking hazards in guinea pigs. It is best to avoid them altogether.
  • The final step is to serve the spinach. Try to mix it up with 3-4 other veggies and serve only a limited quantity. You can use a food bowl like this to serve veggies. Overfeeding of spinach can be bad for your guinea pig’s health.
  • Remember to remove any uneaten vegetables and serve fresh ones all the time. Uneaten fruits and vegetables are often the hotspots for bacterial bloom such as flies and rats.


  • Spinach is an excellent source of Vitamin A, Vitamin C, and other vital nutrients.
  • Can guinea pigs eat spinach? Yes, Guinea pigs can eat spinach for sure, but the quantity served needs to be monitored.
  • Spinach is really good for fulfilling the needs of vitamins in a guinea pigs diet
  • It also contains a high amount of Calcium and Oxalate, which makes them a limiting factor.
  • We can serve a small leaf of spinach to our guinea pigs.
  • Spinach should only be fed once a week. Any regular feeding than that can lead to ill-effect on guinea pig’s health.
  • Always remember to remove spinach stalks before serving it to our guinea pigs.
  • Avoid cooked spinach as those are bad for our guinea pig’s health.
  • Frozen spinach can be served but only after bringing it to room temperature.
  • Serve other healthy vegetables like lettuce, cucumber, zucchini regularly.

Suggested reading:

Sources: The Journal of Nutrition, NCBI, Journal of animal health, Researchgate, Nutrient Requirements of the Guinea PigThe effects of diet on anatomy, physiology, and health in the guinea pigIs Your Guinea Pig’s Diet Providing the Right Nutrients? Care of Guinea Pigs