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Why Is My Squirrel Vomiting? 5 Main Causes And Treatments

You may be asking “Why Is My Squirrel Vomiting”? The truth is, in the wild, squirrels Can’t and DO NOT vomit because it goes against their biological makeup. However, when kept in captivity, they tend to experience this as a result of being fed inappropriate food.

The squirrel is an adorable, furry little animal that we all know doesn’t vomit. But when you keep a pet squirrel, it turns out they do have their own set of habits and some owners feed them too many things which causes this unfortunate side effect which is regurgitation.

In this find article, you will find out more about the causes of this side effect, as well as some possible treatments that may be available to help them feel better.

This article has been reviewed by Dr. Linda. Read more about our knowledge control process here.

Why Is My Squirrel Vomiting? Causes And Treatments When Your Squirrel Vomiting

Vomiting is a symptom of many different health problems but is not commonly seen in squirrels. Squirrels are rodents and according to published scientific studies; they cannot vomit because it goes against their biological makeup as animals that live off food sources such as nuts or seeds which usually don’t cause them any trouble. 

In contrast, when they are kept as pets by humans, they are fed inappropriate foods like dry dog chow with too much protein. This leads up to an upset stomach and frequent regurgitation.

Why Is My Squirrel Vomiting?
An irritated squirrel regurgitation after eating cicadas

When a squirrel regurgitates it can be accompanied by other symptoms which include:

  • Bodily discharge (eyes, mouth, or nose)
  • Seizures or spasms
  • Skin problems such as lesions, scabs, and rashes
  • Shivering, coughing, wheezing, or sneezing

Causes Of Vomiting In Squirrels

After animals ingesting a poison or toxic substance they will usually vomit to get rid of the foreign object. However, Squirrels cannot vomit.

It’s a fairly common notion that squirrels store nuts in their cheek pouches and then regurgitate them later. In fact, this behavior is so well known that it’s often used as a punchline in cartoons and children’s books. However, the truth is that squirrels don’t actually vomit up their stash of nuts – they simply move them from one side of their mouth to the other.

So why do people think that squirrels vomit? It’s likely because of the way they eat. When a squirrel is eating a nut, it will often hold the nut in its front paws and nibble on it for a while. As it does so, bits of the nut may fall out of its mouth and look like vomit. In reality, though, the squirrel is just taking its time enjoying its snack!

Another cause of regurgitation in squirrels is intestinal blockage. This is manifested when a squirrel eats for a couple of days and starts to regurgitate but then there is no fecal output.

Here is a video that people might mistake for a squirrel vomiting. But the reality is not.

Vet answer: This is likely regurgitation, or may be food or saliva being ejected from the mouth.

Squirrel Vomiting Treatments

A squirrel cannot vomit but they can sporadically regurgitate due to some underlying disease. However, it is difficult to diagnose the illness without performing tests on the animal. 

Regurgitation in squirrels can also be caused by certain types of food or even stress. If you notice that your pet is regurgitating frequently, it needs to see a veterinarian for diagnosis and treatment.

The veterinarian may recommend blood or urine tests. The treatment recommended by the vet may depend on the diagnosis and severity of the condition. 

If that all looks clear, Vet may just recommend feeding a bland diet for a few days to let the gastrointestinal tract calm down. If your squirrel’s condition requires anesthesia, you need to take steps to minimize stress and anxiety and provide a safe and comfortable place for recovery.

Squirrels also spit food out or a ground squirrel empties their cheek pouches if they stuff too much food in their mouth. This video is an example [source: Ducky]

Provide a place of his own with clean bedding. A dark, quiet room where the squirrel can rest is best. Take away any items that can cause him injury or stress like toxic plants and wires. Remove all ladders, toys, and swings until he recovers completely. 

Keep him warm by placing a heating pad below one corner of the cage. 

Provide food and water at all times.

Allow your pet to recover from anesthesia by keeping a constant watch on his behavior and vital signs. Regurgitation is normal after treatment, so you need to keep an eye on him. If he regurgitates violently or excessively, then take him back to the veterinarian for a treatment plan that may include intravenous treatment or hospitalization.

Always take your pet to the vet if you notice regurgitation, diarrhea, lethargy, loss of appetite, and weight loss even if he seems well. These are signs of advanced illness that require immediate treatment.

Fact Are Rodents Can’t Vomit

Rodents are not capable of vomiting because they have bodily constraints that would limit how much the rodents could actually attempt to vomit. Their diaphragm, which is a thin sheet muscle underneath their lungs, and stomach aren’t structured well enough for moving contents up its throat.

In 2013, a study was conducted by University of Pittsburgh neurobiologists on rodents and their inability to vomit. They investigated how their brain stems would react by giving the rodents substances to trigger vomiting. 

The researchers found that while other animals would typically experience nausea, weakness, or pain when they are vomiting – which can lead them down the right path towards getting rid an anything inside them- these behaviors were absent from the test subjects even though they ingested substances known for triggering this response in others. 

The researchers reported that the rodents’ brains do not have neurological circuits that allow them to vomit.

There are numerous examples of squirrels or mice ingesting poison. One such example was when the Illinois EPA called upon Wade Tree Service to remove and replace the decaying tree within a historic building in Southwestern, Illinois. 

It was revealed that during their work on the building, they discovered live squirrels living in the walls of the historic commercial structure along with a few dead ones. What they also found was an old, dusty can of rat poison.

Another example is when a brown and black squirrel was seen on the campus of the University of California, Davis. It had been stumbling around and seemed very confused and disoriented. What happens with many types of poisons is that they cause neurological damage to the affected animal. They lose their sense of direction as well as their ability to eat or drink on their own. 

The university sent the squirrel off to an animal rehabilitation center. What happened is that the prognosis for this type of poisoning is poor since it causes irreversible damage to the central nervous system in mammals including humans whether it be through ingestion, inhalation, or absorption.


What does a dying squirrel look like?

When a squirrel is about to die, its body becomes very lethargic in behavior and displays wet lesions or scabs around the eyes, ears, mouth, feet, and genitalia.

How do you know if a squirrel is in shock?

The signs of shock in squirrels include a glassy-eyed stare, cold temperature especially in extremities, and rapid pulse and respiration.

A squirrel in shock needs external heat to stay warm. Make sure the container or animals don’t get too hot, check their temperature frequently, and make sure they’re warm at all times!

What does it mean if a squirrel is shaking?

For the squirrel, its tail is an important tool for attracting attention and warning other animals that it’s dangerous.

When one sees something unfamiliar in their environment they’ll often shake or tremble before them to get others’ focus on themselves as well!

Why can’t rats vomit?

When it comes to vomit, rats are powerless. They can’t throw up because of the powerful and effective gastroesophageal barrier that consists of crural sling (the esophagus), sphincter (gastrointestinal) as well intra-abdominal portion within their bodies wall.


Squirrels can’t vomit, they regurgitate. The most common reason for squirrel regurgitation is to rid their stomach of something that’s not digestible. If you have an experience with this, it might be worth considering what they ate or drank before the incident occurred so you can avoid giving them anything else potentially harmful. 

It’s always best to get in touch with your local wildlife rehabilitator if you suspect there may be other underlying health issues present because these animals are very sensitive and fragile creatures who may need your help.

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