Can Guinea Pigs Eat Kale? (Benefits, Risks, Serving Size & More)

Can Guinea Pigs Eat Kale_

Kale is a green leafy veggie that looks similar to leaves of spinach, but the texture on the outside is strange and it has wrinkled leaves. One thing that everybody knows about kale is how good and healthy it is and some even considered it to be a superfood. We all use it for smoothies, salads, and as a side ingredient for many recipes.

It is always a good idea to do some research before you feed anything new to the guinea pig. Even though they are herbivores, some vegetables and fruits can create some health risks for them, and this goes for kale as well. Now, let’s see if our guinea pigs can eat kale.

Can guinea pigs eat kale? Guinea pigs can eat kale but only in moderation due to high amounts of calcium. Kale provides many health benefits for guinea pigs because it’s rich in vitamin C, vitamin A, fibers and antioxidants but also at the same time low in calories and fat. Guinea pigs enjoy eating kale like every other leafy green vegetable, but you need to be careful with serving sizes of kale as it also contains calcium, which is not good for guinea pigs. Guinea pigs can eat kale greens, kale stems, kale flowers, and every type of kale such as curly and red kale. It’s also important to give them only fresh and well-washed kale.

It is of great importance to make the guinea pig’s diet well balanced because not having a variety of foods could cause nutritional imbalance and similar common health problems. So far we have said that kale is a superfood and beneficial for both humans and guinea pigs. But, why exactly is it so beneficial? Or how often can it be served to guinea pigs, can you offer it to them in small or large serving sizes?

Every detail related to kale and guinea pigs and even the nutritional facts will be explained in the following sections of the article. Next to the health benefits we will of course mention any possible risks that kale can cause guinea pigs. Let’s start!

Is Kale Good for Guinea Pigs? | Health Benefits

Is Kale Good for Guinea Pigs Health Benefits

If you are feeding kale to guinea pigs it would be good to know what health benefits it has for guinea pigs. The following are just some of them,


  • Not fattening – kale is low in fat so even if it’s consumed in high amounts, it cannot change the weight of your guinea pig. It is leafy and light, so there is no risk of obesity.
  • Healthy blood vessels – because it is low in fat, kale is healthy for the blood vessels, and with kale the whole cardiovascular system will stay functional.
  • Good digestion – the fibers in kale are amazing for gut health. A deficit of fibers can cause constipation, but also an excess of fibers can cause diarrhea or loose stool. So, serve in moderation.
  • Prevention from scurvy – when guinea pigs lack vitamin C, they get the disease called scurvy (symptoms: rough coat, swollen joints, less appetite, diarrhea, internal bleeding).
  • Healthy blood – kale contains good amounts of iron. The iron makes the blood strong and with that comes energy as well. The deficit of iron results in anemia and low energy or insufficient appetite.
  • Less stress and healthy organsthe vitamin B6 makes all of the organs healthy, but most importantly it removes stress so guinea pigs can sleep much better!

Nutrition Facts of Kale for Guinea Pigs

Kale and Guinea Pigs

These are the nutrition facts per 100 g of kale (around 3.5 oz of kale):

  • Low in calories – just 49 calories. This is not much for a vegetable and is not fattening as well.
  • Low in fat – since kale has just 0.93 g of fat, it enables blood vessels to stay unclogged, thus the overall cardiovascular health will be good.
  • Carbs – 8.75 g and as we all know, carbs give energy.
  • Fibers – kale has 3.6 g of fibers and they are vital for good digestion.
  • Sugars – there is also some sugar in kale, around 2.26 g. Sugar is not healthy for the guinea pigs but this amount is normal.
  • Vitamin A – 500 µg. This vitamin is probably the best antioxidant. Vitamin A keeps the immunity in good shape but also makes kidneys, lungs, vision, and skin healthy too.
  • Calcium – kale has 150 mg of calcium, which is not really good for guinea pigs because too much calcium can cause bladder stones.
  • Iron – 1.47 mg. This is good for reproduction, growth, and development.
  • Magnesium – 47 mg. Magnesium deficiency in young guinea pigs can cause hair loss, decreased growth, and activity.
  • Potassium – 491 mg. Adequate intake provides healthy blood pressure, a lower risk of heart disease, and benefits for muscle cells.

Is Kale Bad for Guinea Pigs? | Possible Risks

Can I feed my guinea pig kale if it contains some nutrients that can cause health problems? Yes, you can but in smaller serving sizes and not every day. Let’s see what are the possible risks of giving your guinea pigs kale.


• Excessive Thirst (If Fed in High Amounts)

If kale is served in high amounts and also too often, the guinea pig will be begging for water and will urinate even more. This is not a life or death situation, but the serving sizes have to be moderate. After all, too much sodium affects high blood pressure as well.


• Bad Digestion From Sugars

Guinea pigs cannot digest sugars properly. The stomach of the guinea pig is fragile, and sugars can cause them cramps or aches.


• Bladder Stones

Does kale cause bladder stones in guinea pigs? Unfortunately, guinea pigs can get bladder stones by eating kale, but only if you give it to them in large serving sizes and every day. Vegetables that are rich in calcium, such as kale and spinach can cause some urinary problems or other complications in guinea pigs.

It’s recommended not to give guinea pigs a lot of these vegetables and owners need to focus on the food that is low in calcium. Feed vegetables like kale and spinach in moderation to your adult guinea pigs due to the high content of calcium.


More Information About Guinea Pigs and Kale

Guinea Pigs and Kale

Can Guinea Pigs Eat Kale Daily?

No, guinea pigs can’t daily eat kale due to the high levels of calcium. Sure, if you feed your guinea pigs kale every day, then you will provide them with a lot of vitamin C which is good for their health. But, there is a problem with calcium and bladder or kidney stones, so you shouldn’t give your guinea pig too much kale.

Usually, one serving of kale (1 cup) is enough for the guinea pig. Also, because it is high in calcium, 2 times per week is more than enough.


Can Guinea Pigs Eat Raw Kale?

Can Guinea Pigs Eat Raw Kale

Guinea pigs can eat only the raw kale, while the cooked kale is not recommended for them. This is because guinea pigs simply can’t digest cooked foods well in general.

Also, guinea pigs can eat only fresh kale, but before you give it to them, wash and rinse the leaves to remove any bugs or residue from the pesticides.


Can Guinea Pigs Eat Kale Greens?

Yes, guinea pigs can eat kale greens which are packed with beneficial nutrients for their health, such as different vitamins, minerals, fiber, and many others. Kale greens are also low in calories which is also good.

Kale leaves are very delicious for guinea pigs, it’s like a treat for them, but you need to be careful with serving sizes because it is high in calcium.


Can Guinea Pigs Eat Kale Stems / Kale Stalks?

Can Guinea Pigs Eat Kale Stems Kale Stalks

Yes, guinea pigs can eat the stem of kale, because the stem is full of vitamins, fiber and nutrients that are good for them. Stems can offer the same benefits as kale’s leaves.

Kale stems have a tough, chewy and fibrous texture that is good for guinea pig’s digestive system and also for their teeth.


Can Guinea Pigs Eat Kale Flowers?

Guinea pigs can eat many types of flowers and they find them very delicious. So, guinea pigs can eat kale flowers, there aren’t really any reasons why they shouldn’t be able to eat them. Just be careful with serving sizes.

Kale flowers during the spring and has little blooms that are from light to dark yellow in color.


Can Guinea Pigs Eat Curly Kale?

Can Guinea Pigs Eat Curly Kale

Yes, guinea pigs eat curly kale or dwarf blue curled scotch kale. This type of kale also has numerous nutrients, such as vitamin C, vitamin A, and many others that are very good for the guinea pig’s health.

Curly kale is the most commonly available type of kale and usually has light or dark green curly leaves. The stem of the curly kale is hard and very fibrous, and it’s sometimes very hard to chop the leaves from the stem.


Can Guinea Pigs Eat Red Kale?

Yes, guinea pigs can eat red kale which is similar to curly kale, but it has dark red leaves and stems, or just red stems and green leaves. Stems and leaves sometimes even look purple.

You can give to your guinea pigs red kale leaves which are very delicious, but stems are good as well. Don’t give them large serving sizes of red kale and definitely not every day.


Can Baby Guinea Pigs Eat Kale?

Baby guinea pigs can eat kale, but not immediately after birth. They need milk from their mothers for the first 3 weeks, and after that, you can introduce them to alfalfa hay and other foods such as kale.

Also, they need pellet, timothy hay and later you can give them gradually fresh vegetables and fruits that have a lot of vitamins, such as vitamin C.

There are many nutrients in the kale including the calcium, which is very important for the growth of the baby guinea pigs.


Do Guinea Pigs Like Kale?

Guinea pigs really do like kale and they like almost every greeny and leafy vegetable, such as spinach, cabbage, romaine lettuce, and so on. They will eat kale every time you give it to them because they find it is very delicious.

Still, it’s your responsibility not to give kale to guinea pigs very often and in large serving sizes, because of calcium content, even if your guinea pigs enjoy eating it.


What About Frozen Kale for Guinea Pigs?

It’s not recommended to give guinea pigs frozen kale or any other frozen vegetables. As we have said, guinea pigs can’t eat cooked food and in general every frozen food is previously boiled before freezing.

Guinea pigs can eat only fresh and raw kale, but you can also give them any type of kale that wasn’t previously cooked before being frozen.


Quick Facts on Kale


  • In the past kale was called “peasant’s cabbage”.
  • Ancient Greeks used kale and similar leafy greens to sober up after a drunk night.
  • New Yorkers eat kale the most out of all the people in the world!
  • Raw kale is hard for the digestive system in humans and may cause bloating.
  • McDonald’s started selling breakfast meals with spinach and kale.
Can Guinea Pigs Eat Kale _1

Before I let you go, one final thought on food. With food, you can’t ever be too careful which is why I get all guinea pig food from a reliable source such as Amazon. If you are not sure what to order but believe your little piggies deserve some great treats please check our Helpful Guide to the Best Guinea Pig Treats to get some ideas. We have also made a full list of foods that guinea pigs can and can’t eat (150+ Types of Foods). Be sure to also check our recommended products page for everything you will ever need to assure a happy life for your Guinea Pigs. Hope this information was helpful and you have found the answer you were looking for.

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List of Sources

Künzl, C., Kaiser, S., Meier, E., Sachser, N., Is a wild mammal kept and reared in captivity still a wild animal?, Hormones and behavior, 2003.

Syedhussain, S., Tan, K, Abu Bakar, M., The effect of cellulose on crystal formation in the kidneys of guinea pigs fed diet rich in calcium and sodium, University Kebangsaan Malaysia, 1996.

Zilva, S. S., Vitamin C requirements of the guinea-pig, The Biochemical Journal, 1936.

O’Dell, B. L., Morris, E. R., Pickett, E. E., Hogan, A. G., Diet Composition and Mineral Balance in Guinea Pigs, The Journal of Nutrition, 1957.

Cannon, M. D., Emerson, G. A., Dietary Requirements of the Guinea Pig with Reference to the Need for a Special Factor, The Journal of Nutrition, 1939.

Odumosu, A., Wilson, C. W. M., Metabolic Availability of Vitamin C in the Guinea-pig, Nature, Volume 242, Issue 5399, pp. 519-521, 1973.

National Research Council (US) Subcommittee on Laboratory Animal Nutrition, Nutrient Requirements of Laboratory Animals: Fourth Revised Edition, 1995., Washington (DC): National Academies Press (US); 1995.

Norman, R., Wills, A. P., An Investigation into the Relationship between Owner Knowledge, Diet, and Dental Disease in Guinea Pigs (Cavia porcellus), Animals: an open access journal from MDPI, 2016.

Townsend, G.H., The guinea-pig: general husbandry and nutrition, The Veterinary record, 1975.

Bruce, H. M., Parkes, A. S., Feeding and breeding of laboratory animals III. Observations on the feeding of guinea-pigs, Cambridge University Press, 2009.

Witkowska, A., Price, J., Hughes, C., Smith, D., White, K., Alibhai, A., Rutland C. S., The Effects of Diet on Anatomy, Physiology and Health in the Guinea Pig, Journal of Animal Health and Behavioural Science, 2017.

Hirsch, E., Some determinants of intake and patterns of feeding in the Guinea pig, Physiology & Behavior, 1973.

Clarissa Moolbrock

Clarissa Moolbrock is one of the founders and editor at Guinea Pig Tube. She is also an author of "Complete Guinea Pig Care Guide: The Essential, Practical Guide To All Aspects of Caring for Your Guinea Pigs" (available on Amazon). Being a veterinary technician helping animals and sharing her experience and knowledge with other guinea pig owners is her passion. Her life goal is to popularise guinea pigs as pets and that is why she has started Guinea Pig Tube website.