Can Guinea Pigs Eat Grass?

The grass has a huge family, and there are different types of grass in the world. Now, you are probably wondering, if you are allowed to give grass to your pet guinea pig? Let’s find out!

Can guinea pigs eat grass? Well, guinea pigs can eat fresh fruits and vegetables. So, in essence, they can also eat grass. They enjoy eating grass, and this can even be their staple food if you are looking for one. The digestive tract of guinea pigs is designed in such a manner that it can take in a lot of forage. Therefore, feeding the cavy with grass is something that is highly advisable and encouraged. The best way to feed the guinea pig is to use fresh grass to always avoid any form of poisoning. Grasses are easily accessible depending on which variety you are looking for. But you should be careful not to feed your cavy just any grass as this can potentially danger its life. Always have your research right before feeding your cavy anything.

You probably don’t know the benefits, nutrition, health risks and quick facts about grass. No worries, we got you covered!

Health Benefits of Guinea Pigs Eating Grass

Grasses have an array of benefits to humans and animals. In this case, we will focus on guinea pigs. The following are some of the benefits:

  • Helps with the elimination of free radicals. Since the grass is rich in several antioxidants, it helps get rid of free radicals which would, in turn, lead to diseases and infection. This is achieved through the presence of antioxidants among many other nutrients.


  • Aids in the reduction of cholesterol levels in the body. Cholesterol is a harmful waxy substance that is found in the body of humans and animals. Cavies have the potential to suffer from the effects of this substance, and that is why they need protection from it. The truth is that the body needs cholesterol, but too much of it is harmful. Grass helps to reduce the chances of cholesterol levels rising in the guinea pig’s body.


  • Helps in blood sugar control. Grasses generally lack high sugar levels. And in some cases, they have minimal to zero sugar in them. When the blood sugar level in guinea pigs rises, it can lead to death. Apart from death, some of the other effects of high blood sugar levels include thirst, headache, frequent bowel movement, and tiredness. These are things that you can quickly notice on your cavy which can prompt you to feed it grass since grass helps in this regulation.


  • Prevention of inflammation. Research has shown the benefits of grasses when it comes to preventing inflammation. This is a regular occurrence by the body to guard against infections and injury. When your guinea pig is injured or has some disease, grasses can help to reduce inflammation and speed up recovery.


  • Grass can help your cavy lose some weight. First of all, it doesn’t have high sugar levels like some of the other foods do. Again, the grasses have fiber that increases satiety thus limiting the intake of excess food by the pet. When the cavy eats fewer foods, it equally tends to reduce the levels of calories that get into the body. This is one way to reduce weight.


  • Helps with fighting the infections. Grass has been proven to help fight diseases and viruses that are somewhat hard for antibiotics to fight against. This makes it easy for the cavy to stay healthy.


  • Alleviates stomach pains or aches. It also helps to deal with problems such as diarrhea.

Nutrition Facts of Grass

The grass is a nutrient potent veggie and is known to harbor a lot of nutrients in it. Some of the best-known examples include the following:

  • Dietary fiber – Cavies need this for proper digestion and prevention of stomach upsets and ailments.
  • Vitamin C – Cavies have a hard time creating this vitamin on their own, and that is why they need it in massive amounts and regularly.
  • Vitamin A.
  • Vitamin K.
  • Vitamin E.
  • Vitamin B6

Risks to Consider When Feeding Grass to Guinea Pigs

There aren’t many risks that grasses can have on cavies since they can even be used as primary foods for the pet. However, there are rare occurrences where potential risks can arise and grass is no exception. The following are some of the possible dangers:

  • Allergic reactions – in case you notice any form of allergic reaction in your cavy, maybe vomiting or diarrhea, stop the feeding process until you have clear advice from a qualified vet on what you should do next.


  • Grasses are susceptible to mold attack. This can destroy the potency of the grass and become a potential poison to the cavy. This means that you should thoroughly examine the grass and wash it properly before feeding the guinea pig. Otherwise, you might be risking your pet’s life.

Quick Facts on Grasses

Grasses have been in existence since ancient times and are amongst some of the oldest plants present. The following are some of the quick facts about grass:

  • There are over 10,000 different grass types in the world.
  • Certain types of grasses are used in the manufacture of alcoholic drinks.
  • Some grasses are used in the manufacture of papers while others can be used in thatching roofs.
  • The photosynthesis process gives grasses a green color.
  • The grass is the oldest living thing that has been discovered.
  • Species of grass known as seagrass that scientists discovered to have existed for over 200,000 years.
  • Palm trees are a species of tall grass.
  • Most of the earth’s land is covered by grass.
  • Grasses are among the largest ecosystems in the world.
  • 20-40% of the earth is covered by grass.
  • Around 800 million people in the world rely on grasses for livelihood and agriculture.
  • Grass conserves water in the world through acting as an anchor for loose soil.
  • Grass cleans air on earth through absorbing and dispersing rays from the sun.

Related Questions

Can I use grass as the main diet for my cavy?

Absolutely yes. Grasses are very healthy for guinea pigs. For this reason, you can consistently feed your guinea pig grasses without hesitation or fear. After all, they enjoy the feed. But try and supplement the grass with other feeds to create balance.

Can I cook grass for my guinea pig?

Guinea pigs love fresh fruits and vegetables. Therefore when you decide to feed the guinea pig vegies, you must make sure it is fresh and not cooked. They do not eat prepared foods as we do. So, the answer to the question is a big no.

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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