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

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

People really love bananas. Personally, I adore eating them but I like them the most when they are not fully ripe. In this article, we are going to talk about bananas as potential food for the guinea pigs.

So, can guinea pigs eat bananas? Yes, guinea pigs can eat bananas but not in large serving sizes and also not very often. The reason for this is the amount of sugar in bananas. Food that contains a high percentage of sugar is bad for the guinea pig. It can damage the guinea pig stomach and can later cause constipation. Still, guinea pigs can consume bananas in moderate amounts as some form of a treat. Bananas contain potassium and vitamin C which are very beneficial to the health of the guinea pigs.

In the next part, we are going to talk about possible health benefits for guinea pigs eating bananas and risks. Also, we are going to go over the nutritional chart for bananas.

Health Benefits of Guinea Pigs Eating Bananas


  • Guinea pigs are prone to kidney stones and bananas with a high amount of potassium are a great way to prevent this. In order for guinea pigs to have healthy kidneys, they need a regular intake of potassium. Bananas contain vitamin C which is also extremely important to guinea pigs. Why is that? Well, just like us they can’t produce vitamin C within their bodies and they need an external source. This is where bananas can help because they contain vitamin C but only if consumed moderately.

Nutrition Facts of Bananas

Nutrition Facts of Bananas

Bananas are very nutritious and they contain many vitamins and minerals. One banana depending on the size has around 100 to 120 calories. It is mostly made of carbohydrates make it low on the protein side.  Bananas don’t contain fats or cholesterol making them extremely healthy to eat.

This is a nutritional chart for the banana:

  • Potassium – 450 mg
  • Vitamin B6 – 0.5 mg
  • Magnesium – 34 mg
  • Manganese – 0.3 mg
  • Niacin – 0.8 mg
  • Vitamin C – 9 mg
  • Dietary Fiber – 3g
  • Riboflavin – 0.1 mg
  • Protein – 1 g
  • Iron – 0.3 mg
  • Vitamin A – 81 IU
  • Folate – 25.0 mcg

As you can see from the nutritional data the amount of potassium and Vitamin C is just amazing.

Risks to Consider When Feeding Bananas to Guinea Pigs

As much as bananas are good for growth and for the health of the kidneys they also contain risks.

  • If the guinea pig’s kidneys are not functioning well, the bananas and the potassium that they contain can result in guinea pig’s death. When kidneys are not working properly they are not able to remove the excess of potassium from the body and if that happens the guinea pig can die. This is why it is very important not to feed them bananas if they have any form of kidney disease. Only feed them bananas to maintain the health of the kidneys and to prevent kidney stones.


  • Also, bananas contain lots of sugar that can cause problems and constipation problems with the guinea pig. Bananas are fibrous food and lots of fiber can also cause problems. These problems can manifest in the form of stomach bloat, gases, and cramps. All of this can cause the guinea pig extream pain so avoid giving them too much of anything and this includes banana as well.

Tips on How to Feed Bananas To Guinea Pigs (Serving size and Frequency)

Should Guinea Pigs Eat Banana Peels?

Can guinea pigs eat banana skin? Yes, you can give your guinea pig banana peels/skin but not very often. Also, there is a possibility your guinea pig won’t even like it. Guinea pigs have different tastes, this means if you have two of them one can like banana peels and the other one won’t.

The peels are almost the same as the banana but they contain a lot less sugar still they contain just too much fiber that can make guinea pig constipated. Just try to give it once or twice a week and never as a regular daily diet plan. Most owners give their pets leftovers and for some pets, this is not a problem but guinea pigs are somewhat sensitive even if they do not require lots of maintenance. I would just avoid giving them too much of bananas and banana peels especially.

How Often Should Guinea Pigs Eat Bananas?

We know that there are many health benefits for guinea pigs if they eat bananas but everything above the normal limit especially the potassium in the bananas can cause serious problems.

Frequency – it is recommended to give guinea pigs bananas ones or twice a week in small amounts.

Serving size – one or three slices of one banana is more than enough for one guinea pig.

Just keep in mind they are very small compared to us and we can’t give them a whole or a half of the banana. As for the banana peels well if the guinea pig even likes them you can’t just throw the whole banana peel in the cage. Also, one or two small pieces should do the trick.

Just be careful because the fiber and the sugar in them can really hurt your guinea pig.

What Will Happen If My Guinea Pig Eat Too Much of the Banana?

Well, nothing serious if bananas weren’t the regular part of the guinea pig diet. If it just ate too much of the banana nothing fatal can happen. There could be serious stomach bloat, gases, constipation and possible craps that will give a guinea pig sharp pains. The guinea pig will probably look frozen and in discomfort producing sharp noises to tell you that it is in pain.

To help your desperate guinea pig try to give it more water the usual as this can help with a large amount of sugar it just consumed. If the guinea pig still looks in pain and also constipated for more than 1 day you need to take it to the vet.

Related: Can Guinea Pigs Eat Dried Bananas?


The most important thing to understand when giving your guinea pig bananas is that they should be given occasionally as a treat and not as a regular part of the diet. Love your pet and always do some research before giving him a new food. When you give him a new type of food always keep track of your guinea pigs behavior in order to see how his body reacts to the new food.

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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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.