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Hay, fresh vegetables, and fruits are the staples of a guinea pig’s normal and healthy diet. Not all food, on the other hand, is suitable for them. Guinea pigs are sensitive to a variety of foods, many of which are toxic to them. As a result, we must exercise caution when selecting any type of food for our guinea pigs.

Guinea pigs have a digestive system that is susceptible to infection. Their digestive system is not capable of breaking down complex carbohydrates and sugars. Aside from that, cooked and processed foods should also be avoided at all costs. Tomato leaves, avocados, rhubarb, and other plants that are toxic to pets, such as rhubarb, should never be served to guinea pigs.

Guinea pigs should be fed foods that are easy for them to digest, and excessive feeding of anything is not recommended because it can lead to health problems in the animals.

Adding hay to guinea pigs is the best option because it allows them to chew and digest the food properly.

Hay contains the right amount of fiber, which aids in digestion, and chewing hay helps guinea pigs to strengthen their teeth and keep them short, as guinea pigs’ teeth grow continuously. Hay also helps guinea pigs to maintain a healthy weight.

Vegetables and fruits with a high nutritional value should be provided for them. Make certain that whatever you feed them is fortified with Vitamin C, as they are unable to produce Vitamin C on their own, as well.

In this article, we will discuss some foods that guinea pigs are not allowed to consume because they are harmful to our guinea pig’s overall health. So, let’s get this party started.


What foods can guinea pigs not eat

Here are some food that are harmful to guinea pigs:

  • Avocado
  • Seeds
  • Chocolate
  • Allium Vegetables(Onions, Garlic, Shallots)
  • Rhubarb
  • Iceberg lettuce
  • Potato and tomato leaves
  • Processed snacks(Chips, fries, etc)


Guinea pigs cannot eat avocado.

Avocado contains a variety of chemical constituents that are harmful to guinea pigs, among other things.

Avocados are rich in fatty acids as well as persin-like chemicals. Guinea pigs can develop digestive problems and diarrhea as a result of fatty acids and persin consumption.

guinea pigs may also suffer from food toxicity because they are unable to vomit once they have consumed a food item in large quantities.

There have been instances in which a guinea pig ate an avocado and the avocado became stuck halfway down the guinea pig’s intestine, requiring minor surgery to remove the avocado.

Avocado is a beneficial fruit for humans because it is high in nutrients such as vitamins, minerals, and other nutrients; however, it is not beneficial for our guinea pigs because it is high in fat.


In general, it is not recommended to feed any type of seeds to guinea pigs because they can pose a choking hazard to the animals.

For example, guinea pigs are not allowed to consume hard seeds because they can cause choking problems in the animals. Orange, apple, peach, and other fruit seeds, for example.

Guinea pigs, on the other hand, can consume some fruit seeds that are small and nutritious in nature. Guinea pigs, for example, can consume the seeds of fruits such as strawberries, blackberries, gooseberries, and other berries.

The seeds of some fruits, such as the apple, contain a trace amount of cyanide as well. These have the potential to be fatal to their health.


Guinea pigs are also unable to consume chocolate.

Chocolates are delicious to eat, but they contain a high amount of sugar, which can cause diabetes and digestive problems in guinea pigs if they are consumed in large quantities.

Guinea pigs’ body weights are increased as a result of a high fat content and the calories that come with it.

Chocolate is also high in theobromine and caffeine, both of which should be avoided at all costs when it comes to pets.

Allium Vegetables(Onions, Garlic, Shallots)

Guinea pigs should not be fed allium vegetables because they are poisonous to them. Onions, garlic, shallots, and other similar vegetables fall into this category.

Despite the fact that allium vegetables are extremely beneficial to humans due to their high levels of antioxidants and Vitamin C,

The consumption of allium vegetables, on the other hand, can be fatal to guinea pigs. Disulfide can be found in allium vegetables.

Guinea pigs can become anemic as a result of their exposure to them. These vegetables also contain sugar, which is the primary cause of diabetes in guinea pigs as well as digestive problems in the animals.



Rhubarb is not suitable for consumption by guinea pigs. It contains a high concentration of oxalic acid, which can cause health problems in guinea pigs such as gastrointestinal issues, diarrhea, and bloating, among others.

A significant amount of sugar, calcium, and phosphorus are present in rhubarb, all of which are detrimental to the health of the guinea pig. Guinea pigs can develop diabetes, digestive problems, and kidney problems as a result of these exposures.

Iceberg lettuce

The digestive system of the guinea pig is designed to handle fresh vegetables and fruits. For guinea pigs, iceberg lettuce is not a significant source of discomfort or discomfort at all.

It is not harmful for them to consume a small amount of iceberg lettuce on a rare occasion, but consuming too much can be harmful to the animals.

The nutritional value of iceberg lettuce is negligible in the case of guinea pigs.

They are made up of a combination of water and cellulose. Guinea pigs may experience diarrhea as a result of this combination.

In addition, because they contain calcium and phosphorus, they may cause kidney problems in guinea pigs, as well as bladder stones in them.

Also read: What variety of lettuce can guinea pigs eat and how much?

Potato and tomato leaves

Potatoes are a good source of fiber and carbohydrates. Potatoes contain fiber, which helps to lower cholesterol levels in the body. Due to the high concentration of starch in potatoes, they are difficult to digest for guinea pigs.

The tomato plant is a member of the nightshade family. This means that tomato leaves contain toxic alkaloids that are harmful to the body. Gennea pigs are particularly sensitive to these chemicals, and they should be kept away from them at all costs….

Also read: Why can’t guinea pigs eat potatoes and what to feed instead?

Sugary processed foods

No, guinea pigs cannot eat sweet processed food because they like to eat fresh foods that they can digest properly.

Sugary processed foods contain an excess amount of sugar that can cause diabetes and digestion problems in guinea pigs.

Sugary processed foods can trigger Enterotoxemia in guinea pigs.

Enterotoxemia is a disease that can happen due to the presence of Clostridium type bacteria. These bacteria get a boost from sugary food and thus such food should be avoided altogether.

Processed snacks(Chips, fries, etc)

Crispy potato chips are the first thing that comes to mind when you’re looking for a quick and tasty snack. They may be delicious to eat, but they are extremely harmful to the health of guinea pigs in the long run.

Guinea pigs have a difficult time digesting fried or cooked food. The practice of feeding cooked food to guinea pigs is a surefire way to end up in trouble.

These processed foods can cause health problems in guinea pigs, including the following:

  • Urinary problems: Chips are high in calcium and phosphorus, which can introduce kidney-related problems in guinea pigs.
  • Increase body fat: Chips also consists of salt, fiber, carbs, and calories. These are components that promote the increment of body weight.

What to do if your guinea pig ate something poisonous

You want to ensure the safety of your guinea pig at all times. However, if you end up feeding them something bad or if they get their hands on something that they shouldn’t have eaten in the first place, the situation can quickly spiral out of control.

If your guinea pig consumed something poisonous. Once you have determined whether or not they have consumed anything poisonous, you must look for certain signs that will indicate this. Let’s take a look at some of those indicators:

The signs listed above are ones that you can passively notice. Any of these symptoms in your guinea pig should prompt you to call a veterinarian or take the animal to an emergency vet clinic right away, as soon as possible.

Your guinea pig will be subjected to a series of tests at the veterinary clinic in order to determine the cause of the poisoning. A stool test and a blood test will be performed by the veterinarian to determine the extent of the poisoning.

Once all of the examinations and treatments have been completed and your guinea pig is ready to be returned home, you must ensure that your guinea pig is properly cared for. Try to provide them with a quiet place to recuperate, and always make an effort to keep them hydrated.

It is highly recommended that you keep them away from potentially harmful substances such as household products (detergents, soap), human food, herbicides, poisonous plants, and so on and so forth.

Due to the fact that they are unable to throw up anything they have ingested, food poisoning can be life-threatening for our Guinea pigs. As a result, the food must pass through their digestive system, where it can cause serious harm to the animals’ health.

Learn more about why guinea pigs cannot vomit and what you should do if they ingest something toxic.

Food guinea pigs should avoid eating

Here are some foods that are not toxic to our guinea pigs but are equally bad for them.

  • Nuts
  • Muesli
  • Cat or Dog food
  • Starchy foods like potatoes, parsnips, etc
  • Dried fruits like raisins, etc
  • Cooked food

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Before you read on, here are some supplies for your guinea pigs that have been hand-picked by our experts and that you should add to your wishlist right away:


Nuts are not recommended for guinea pigs to consume. Nuts contain a significant amount of fat. Fats are detrimental to the health of guinea pigs.

The digestive system of the guinea pig is fragile, and foods high in salt and sugar, such as nuts, are difficult for it to digest.

Gnuea pigs’ health can be jeopardized by an excessive amount of sugar and salt. Nuts, in addition to containing sugar, salt, and fats, also contain calcium, which can cause kidney and urinary problems.

Also read: Can guinea pigs eat nuts?


Guinea pigs enjoy special treats from time to time in addition to their regular diet. It is not a good idea to give them muesli as a treat.

Muesli does not contain any nutritional elements that are beneficial to guinea pigs, so they are not recommended. It is high in sugar, which can cause diseases such as diarrhea and dental disease if consumed in large quantities.

In guinea pigs, muesli has been shown to promote weight gain. Overweight or obese individuals are at increased risk of developing heart disease. Muesli is also to blame for the development of Enteroteoxema in them.

Also read: Can guinea pigs eat dry cereal?

Cat or Dog food

If you have a variety of pets in your home, you should be aware that they may be able to share meals with one another.

If you have both dogs and guinea pigs as pets, there may be instances in which your guinea pigs steal the food from your dogs and eat it themselves. They may find it fascinating, but it is unquestionably harmful to their physical and mental health.

Your dog’s or cat’s food is not toxic to your guinea pigs; however, the problem is that these foods are high in calories, which is detrimental to their health.

Amino acids, vitamins, and minerals are also present in these foods, and while they are beneficial to your dogs, they can be detrimental to our guinea pigs.

As an added bonus, these foods are high in calcium, which is important because guinea pigs are unable to consume large amounts of calcium. Therefore, try to keep your guinea pigs from eating the food of your other pets.

Starchy foods like potatoes, parsnips, etc

Guinea pigs have a delicate digestive system that requires special care.

Starchy foods such as potatoes and parsnips are difficult for guinea pigs to digest because of their high starch content.

Starch can also be a risk factor for heart disease. Aside from that, it is also responsible for weight gain.

Guinea pigs develop diabetes as a result of starch consumption. It aids in the rapid elevation of sugar levels as well as the rapid decrease of sugar levels, which can be extremely dangerous for guinea pigs.

Dried fruits like raisins, etc

Guinea pigs should not be given dried fruits because they are high in sugar and salt, and they also contain preservatives, which are harmful to them if they are given to them.

Cooked food

As you have already learned from this article, guinea pigs have a digestive system that is not very efficient. They can only digest foods that are raw or barely cooked. You are unable to serve them with prepared meals.

Cooked foods are high in sodium, sugar, and fat, all of which are detrimental to the health of guinea pigs.

Guinea pigs become ill if they consume cooked food, and they can suffer from a variety of health problems, including diarrhea and digestive problems.

What food can guinea pigs eat?

A well balanced diet for guinea pigs must include:

  • Hay
  • Vegetables
  • Pellets
  • Fruits and treats


Given that guinea pigs are herbivores, they can only consume freshly prepared foods. Hay contains a lower concentration of protein than other types of food, but it is high in fiber, which is particularly beneficial to the digestive system of guinea pigs.

Guinea pigs enjoy chewing hay because it keeps their teeth short and allows them to maintain good dental hygiene. Let us now take a look at the different types of hay that guinea pigs can consume:

  • Timothy Hay
  • Meadow Hay
  • Orchard Hay

When it comes to guinea pigs’ hay, Timothy is the most common and preferred variety. We were able to get the exact amount of nutrients our guinea pigs required.

Guinea pigs can also be fed hay from fields and orchards. The use of this hay as a substitute for Timothy hay is preferred by people who are allergic to the grass.

Also read: All about hay(Types, Serving & More)


The guinea pig’s diet includes a variety of vegetables that are essential to its health. They provide them with a lot of nutrition, which helps them stay fit and healthy.

Guinea pigs, unlike other animals, are unable to produce vitamin C on their own, so they must rely on vegetables containing vitamin C to provide them with the vitamin C they require.

They must be provided with the appropriate amount of vegetables because this aids in keeping the guinea pig’s body hydrated. However, always remember to follow these simple guidelines before serving them with vegetables:

  • Always serve fresh vegetables.
  • Always wash them with water to remove all the dirt before serving them.
  • Make sure you cut them in proper size so that guinea pigs do not face choking issues.
  • Never overfeed them.

Possibly, at this point, you’re considering what kind of vegetables you should serve your guinea pig. Let’s say you’re thinking about what kind of vegetables to serve your guinea pig for dinner. Consider some of them: Let’s take a look at some of them:s Take a look at some of them:

Also read: 70+ Different types of vegetables for your guinea pigs


Guinea pigs are used to eating hay and vegetables, but they can also eat pellets if they are given the opportunity. Guinea pigs, on the other hand, cannot survive solely on pellets.

It is necessary to feed pellets to our guinea pigs in small quantities. Otherwise, it may result in bladder stones.

Guinea pigs do not require a large amount of pellets to survive. Once a day, 18 cup of pellets should be given to a normal guinea pig to ensure that they get enough nutrition.

If your guinea pig is underweight, you should increase the amount of food you give them to help them gain weight. Always remember to serve pellets that are high in fiber when you are serving them (Timothy based).


guinea pigs consume fruits on a regular basis as part of their diet. It provides the guinea pigs with nutrition as well as refreshments.

Fruits help to keep them healthy and content. They contain a high concentration of antioxidants, which are beneficial to the health of guinea pigs.

It also contains Vitamin C, which guinea pigs are unable to produce on their own, as well as other nutrients.

As you may be aware, guinea pigs can consume fruits, but they should not do so on a regular basis because some fruits are high in sugar, which is detrimental to their health.

Now, let’s take a look at some fruits that are high in Vitamin C and can be consumed on a regular basis:

Also read: 70+types of fruits for your guinea pigs

Other Treats

Maintaining a proper diet is essential for maintaining our health and fitness. However, there are times when eating something other than the diet is not a major problem.

Even though we are all aware that guinea pigs should have a diet consisting primarily of vegetables and hay, it is sometimes necessary to introduce a variety of foods to their diet. As a result, including a treat would be essential.

You can also give your guinea pigs a small treat once in a while if you want to. However, it should never be included in their regular diet because it can be detrimental to their health.

Also read: Best treats for our guinea pigs

Food safety tips for guinea pig owners

Guinea pigs have a delicate digestive system that requires special care. When it comes to their food, they require special attention and monitoring because any poor quality food can result in fatal health problems for guinea pigs.

As a result, you must exercise caution and be aware of the potential negative consequences of the foods that you feed to guinea pigs.

Here are some safety precautions you should take into consideration before feeding guinea pigs:

  • Guinea pigs enjoy eating a variety of fresh fruits and vegetables. However, there are some fruits and vegetables that can be extremely harmful to a person’s health and well-being. Already in this article, we discussed the fruits and vegetables that guinea pigs are unable to consume due to their small size.
  • Guinea pigs enjoy foraging for food and eating it. It is possible that they will consume some plants that are harmful to their health during this procedure. Sweet alyssum, the crown of thorns, Shirley poppy,
  • Ageratum, and other such plants are examples of plants that are toxic to guinea pigs and should be avoided. Consequently, always keep them away from these plants, especially if you allow them to grow wild in your yard.
  • You should never give them foods that are high in calcium or sugar. Excess calcium can cause kidney problems in guinea pigs, and sugar can cause diarrhea, bloating, and a variety of other digestive issues in the animals.
  • Always serve them foods in small portions so that if they experience any discomfort, they can be removed from the diet immediately. Overfeeding can also result in a variety of health problems in guinea pigs.
  • Make sure to thoroughly clean the food with fresh water before serving it to the guinea pigs to ensure that all of the dirt and chemicals have been washed away.
  • Never feed them anything that has been cooked or frozen. Due to their hardness, frozen foods are difficult to chew and ingest, making them unsuitable for people who have digestive issues.
  • Always remember to clean the living area and remove any uneaten food from the guinea pig’s cage because this can attract flies and rats to the guinea pig’s cage.Always keep in mind the above steps before feeding them to keep your guinea pig healthy and fit,