Why Is My Squirrel Vomiting?

The common concept about squirrels is that they do not vomit, especially in the wild, because their digestive systems cannot throw up the digested food, as humans and other animals do.

Why Is My Squirrel Vomiting? Squirrels can vomit because of toxic food, blockage in the intestine, disease or virus, over-eating, stress, and indigestible food. They regurgitate, which looks like they vomit, because their digestive systems cannot push back the food from the stomach, and their neurological system is not associated with mouth and throat to trigger vomiting.

It is not alarming if they are eating and defecating normally. Still, it is better to take the vet to the veterinarian if this continues because their condition can get severe. 

Why do squirrels vomit?

They vomit because of many reasons, and some important and alarming reasons are explained here.

Toxic food

Squirrels love to eat no matter which food is available, as they grab the piece and start eating it because they are scavengers. They do not care if the food is healthy or not.

They can eat the food in the trash can, which is moldy and can be toxic for the little rodents. Moldy food is not safe because it contains poisonous toxins, which can cause diseases.

Moreover, dog food or other pet food can be toxic for these rodents if they eat from their tray because the food can contain preservatives and ingredients, not safe for these rodents. 

Blockage in intestines

Intestinal blockage causes the food and stole to not pass freely from the intestines as it usually does, which leads to different health problems in animals.

It can eat some foreign hard particles, which causes the intestine to block and does not allow the rodent to eat or defecate.

The problem can cause loss of appetite and pain in the stomach because it cannot digest the hard foreign particles which obstruct the intestines.

The baby squirrel can lose its appetite or eat less than the routine diet and vomit the food you feed. It can also stop urinating or defecating on stimulation, which is a clear sign of intestinal blockage.

Disease or virus

It can be due to some disease or virus, such as Leptospirosis or squirrel pox, which can cause if they get in contact with the infected animals or pets in the house.

Leptospirosis is caused by the bacteria found in the urine and feces of infected rodents, and the bacteria can stay in the soil or environment for months.

They can get ill if they get the bacteria from the urine and feces of other infected pets. Moreover, they can get other diseases from toxic food items and vomit when they eat anything because the stomach cannot work correctly if infected.


Over-eating is another reason, as they cannot digest large quantities of food at a time. Their digestive systems are small, just like their own size, and they digest a small quantity of food.

House owner wants to feed healthy and more food to the pet squirrels in the yard, but it can cause more damage to their little digestive system.

They can regurgitate the undigested food if the stomach cannot handle it. Therefore, it is better to feed them an adequate food quantity and avoid over-feeding at a time.

Thus, too much or fast eating is not beneficial for these rodents, and it is good if you feed them with small food pieces, which makes the food easy to digest.

Stress and scared

They can get stressed or scared if predators attack or you handle them harshly, especially the baby squirrels. Vomiting is their natural way to respond to stress or a defense mechanism to keep predators at bay.

They can produce excessive amounts of glucocorticoid hormone when stressed, which can cause disease and other behavioral changes.

It is better to be humble and soft with these little rodents because they can vomit if threatened as a defense to protect themselves, and its smell will keep the predator away.

Indigestible food

They cannot digest all types of foods, such as the high cellulose food products, because the high cellulose products can lower the dietary fibers in the digestive system and make it difficult to digest this food.

Food products, such as cheese, high-fat milk, bread, and yogurt, should be avoided because their stomach cannot digest this food.

You can take a diet plan from a veterinarian if you have a pet or baby squirrel and you do not have proper knowledge about the correct food to feed them. 

What to do when a squirrel is vomiting?

Vomiting is sometimes normal but can be alarming if these rodents do this more often a day or have blood in the vomit. Taking them to the veterinary center is better because they have better experience in dealing with the situation.

They will do necessary tests, let you know if the squirrel’s condition is severe, and give the rodent medicines or antibiotics. You can keep them in a room alone and set a soft bed for them to rest there, as they can recover on their own without any medical treatment if it is due to over-eating.

Keep them warm and feed them with healthy food after regular intervals. It is better to keep other pets away from the sick rodents if you do not know its reason.

The sick rodent can spread the germs to other pets in the house; therefore, keeping the pets away from the ill rodent is better. Baby squirrels need special care regarding their food, as they cannot digest solid food at an early age.

Do squirrels regurgitate or vomit?

These rodents actually do not vomit but regurgitate. Their digestive system has a thin diaphragm, which is weak and cannot force back the food from the stomach.

Their neurological system is not connected with mouth, shoulder, and throat activity that causes nausea and triggers undigested food to throw up through the esophagus.

These rodents can regurgitate, which means they throw out the stored nuts or food from their mouth after eating much or indigestible food.

People think that they vomit because of the way they throw the food out of their mouths. Their stomach and digestive system are not structured to vomit as it is against the digestive makeup, but they regurgitate to get rid of the extra food they eat.

What does squirrel vomit look like?

The squirrel vomit looks like indigestible food or small solid food crumbs that do not dissolve or digest inside their stomach.

These rodents may regurgitate the food as soon as they eat it, which looks like the same food they eat. Sometimes, it looks green or brown, which shows their stomach is upset, and maybe they eat poisonous or moldy food.

They can have blood in it, which shows a severe infection in the digestive system, and need immediate treatment because it can cause serious health problems.

What are the effects of vomiting on squirrels?

Vomiting is directly related to dehydration in squirrels because it causes the water level in the body to reduce, which is not safe.

Hydration can also cause other problems, such as dry or loose skin, electrolyte imbalance, and loss of appetite. Therefore, make sure to hydrate these rodents after 22-24 hours.

It can also lower the essential nutrients in the body, which causes weakness and laziness. They cannot play and eat well and feel sick.

It can increase stress and reduce energy, as they do not feel well. They can stop eating, which causes weight loss. Therefore, it is essential to make these rodents feel secure and reduce their stress level, which helps them to stay healthy and happy.

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