Can Guinea Pigs Throw Up? What You Need to Know!

Guinea pigs are adorable and popular pets that have been kept by humans for centuries. They are herbivores and primarily feed on hay, fresh vegetables and fruits, and pellets.

I have often been asked if guinea pigs can throw up, and the answer is no. In this blog post, we will explore the reasons why guinea pigs cannot throw up and how you can take care of your furry friend’s digestive health.

Can Guinea Pigs Vomit?

The answer is no. Unlike humans and other animals, guinea pigs cannot vomit. Vomiting is a complex process that involves the contraction of the diaphragm muscle and the relaxation of the lower esophageal sphincter (LES), which allows the food to come back up.

The LES is a muscular ring that separates the esophagus from the stomach, and it is responsible for preventing the food from flowing back into the esophagus.

Understanding the Digestive System of Guinea Pigs

Anatomy of the Digestive System

Guinea pigs have a unique digestive system that is designed to digest tough plant fibers. They have a simple stomach with a single compartment and a relatively short intestine compared to other herbivores.

The stomach of guinea pigs is divided into two regions, the fundus, and the pyloric region. The fundus is the upper part of the stomach, and it is responsible for storing food, while the pyloric region is the lower part of the stomach, and it is responsible for mixing food with digestive juices.

How Food Moves Through the Digestive System

When a guinea pig eats food, it travels down the esophagus and into the stomach. The food is then mixed with digestive juices and moves into the small intestine, where most of the nutrients are absorbed.

The undigested fiber then moves into the large intestine, where water is absorbed and feces are formed. Unlike humans, guinea pigs do not have a cecum, which is a pouch in the digestive system that contains bacteria that help break down cellulose.

What Happens if Guinea Pigs Ingest Something Toxic or a Non-food Item?

If your guinea pig ingests something toxic or a non-food item such as plastic or cloth, they will not be able to vomit it back up.

This can lead to serious health complications and even death. As a pet owner, you should always keep an eye on your guinea pig and make sure that they do not have access to any toxic substances or non-food items.

Symptoms of Stomach Upset in Guinea Pigs

Behavioral Changes

If your guinea pig is not feeling well, they may exhibit behavioral changes such as lethargy, hiding, or aggression. Guinea pigs are social animals, and any sudden change in behavior should be taken seriously.

Loss of Appetite

A loss of appetite is another common symptom of stomach upset in guinea pigs. If your guinea pig is not eating or drinking, they may become dehydrated and weak.


Diarrhea is a common symptom of digestive issues in guinea pigs. If your guinea pig has diarrhea, it may be a sign of an underlying health issue or dietary imbalance.

What to Do If Your Guinea Pig is Not Feeling Well

Immediate Actions to Take

If you notice any of the symptoms mentioned above, you should take immediate action. Make sure that your guinea pig has access to fresh water and hay. You can also try feeding them a small amount of a safe vegetable such as cucumber or carrot.

When to Seek Veterinary Care

If your guinea pig is not feeling well, you should take them to a veterinarian as soon as possible. The veterinarian will perform a thorough examination and may recommend additional tests such as blood work or X-rays.

Prevention of Digestive Issues in Guinea Pigs

Appropriate Diet

The best way to prevent digestive issues in guinea pigs is by feeding them an appropriate diet. Guinea pigs should have access to fresh hay at all times, as well as fresh vegetables and fruits. Pellets should be fed in moderation, and you should avoid giving your guinea pig any sugary or fatty treats.

Clean and Safe Environment

You should also make sure that your guinea pig’s environment is clean and safe. The cage should be cleaned regularly, and your guinea pig should have access to fresh water and bedding.


Guinea pigs cannot throw up due to their unique digestive system. As a pet owner, it is important to take care of your guinea pig’s digestive health by feeding them an appropriate diet, providing a clean and safe environment, and seeking veterinary care when necessary.

By following these tips, you can ensure that your furry friend lives a happy and healthy life.

ThePetFaq Team