How Big is a Chihuahua’s Stomach? (Stomach Issues + 8 Tips)

How big is a Chihuahua’s stomach?

As a Chihuahua owner, it’s essential to understand their unique characteristics and needs. One aspect that many owners may wonder about is the size of their dog’s stomach. 

Understanding your furry friend’s digestive system is crucial for their health and well-being. 

In this blog post, we’ll explore the size and anatomy of a Chihuahua’s stomach, common stomach problems, and tips for keeping their tummy happy. 

Get ready to become a Chihuahua digestive expert!

a tan chihuahua is exposing his tummy which leads us to wonder how big is a Chihuahua's stomach

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How Big is a Chihuahua’s Stomach?

When it comes to the size of a Chihuahua’s stomach, it can vary depending on the individual dog’s size, weight, and age. On average, a Chihuahua’s stomach can hold about ¼ to ½ cups of food per meal.

The size of a dog’s stomach is proportional to their body weight and size. The average Chihuahua weighs between 3-6 lbs

A teacup Chihuahua, for example, will have a smaller stomach capacity than a standard-sized Chihuahua. A larger dog will naturally have a bigger stomach capacity than a smaller dog. 

When it comes to the size of a Chihuahua’s stomach, age is a big factor.

Chihuahua puppies also have very tiny tummies until they reach 9-12 months of age, at which they are considered fully grown and their stomach is developed completely.

According to this digestion study, dog stomachs have the capacity to expand, with a maximum volume ranging from 0.5 L in small dogs to 8 L in larger breeds.

This allows dogs to consume large quantities of food, depending on their size.

Anatomy of a Chihuahua Stomach

a diagram showing the organs of the digestive system of a dog

The Chihuahua’s stomach is located in the abdominal cavity.

Positioned between the esophagus and the small intestine, the stomach is responsible for breaking down food and preparing it for nutrient absorption

It is a j-shaped glandular organ divided into 5 regions: the cardia, fundus, corpus, antrum, and pylorus.

The cardiac region is the uppermost part of the stomach, closest to the esophagus. This area is responsible for receiving food and initiating the digestive process. 

The fundic region is the middle part of the stomach, where food is stored and mixed with digestive enzymes. 

The corpus or body region is the largest part of the stomach, where most of the digestion takes place. 

The antrum and pyloric regions are the lower part of the stomach, where food is further broken down and prepared for entry into the small intestine.

How Long Does It Take A Dog To Digest Food?

When it comes to the digestive system of a dog, it can vary depending on the breed, size, and age of the dog.

On average, it takes small dogs like Chihuahuas about 4 hours to digest food, and larger dogs around 8-9 hours. 

The type of food your dog eats can also affect the digestion process. Protein content and processing play essential roles in digestion time. 

Wet dog food is easier to digest than dry food due to its higher water content, which helps it move faster through the digestive tract.

Wet food can take 4-6 hours while dry dog food can take 8-10 hours.

Factors such as age, health, and activity level can also affect the digestion process. Older dogs have a slower metabolism, while highly active dogs may have a faster digestion time.

Dog Stomach Vs Human Stomach

a diagram showing the digestive system of a dog and where the stomach is located
a diagram showing the digestive system of a human and where the stomach is located

When it comes to the stomach, dogs and humans have some similarities, but also some significant differences. 


The size of a human stomach can vary depending on a person’s body size, age, and gender. 

According to Healthline, an empty human stomach is 12 inches long and 6 inches across.

The stomach is incredibly elastic and can expand up to 3 or 4 times its original size to accommodate a larger volume of food.

A dog’s stomach size is determined by its weight or breed. Smaller dogs, such as Chihuahuas, will typically have smaller stomachs than larger breeds, such as Golden Retrievers.

A small dog’s stomach can hold a maximum of 0.5 liters of food, while large dogs can accommodate up to 8 liters in their stomachs.


Both a dog’s stomach and a human’s stomach share a similar J-shaped pouch structure

This similarity allows for efficient food processing and digestion in both species. 

Despite the differences in size and acidity, this common J-shaped design supports the vital role of the stomach in breaking down and preparing food for further digestion and absorption.

Transit Time

In humans, digestion begins in the mouth, where digestive enzymes are released in saliva to break down food. 

For dogs, the digestion process starts in their stomach since they gulp their food rather than grinding it like humans.

Food typically remains in a human stomach for around 40 minutes to 4 hours, depending on the type of food consumed.

However, in a dog’s stomach, food is retained for a longer period (4-12 hours) compared to humans, which allows tough pieces of meat and bone to be broken down.

This unique characteristic contributes to dogs feeling fuller for an extended period, which is why they can be fed once a day.

Overall, dogs have a faster gastrointestinal transit time of 6 to 8 hours, whereas, in humans, it can range between 20 and 30 hours.


Dogs have more hydrochloric acid in their stomachs than humans, which helps them break down and digest raw meat more easily

. Dogs can produce 10 times more acid than a human stomach. 

This eliminates a large portion of harmful bacteria, safeguarding your canine companion from potential illnesses.

The high acid also aids in breaking down protein and softening bones and tough bits that would be challenging for a human to digest.


Humans and modern dogs are both omnivores.

Both species have the ability to consume and digest a wide variety of foods, including plant-based and animal-based sources.

Modern dogs have adapted to a more omnivorous diet over time. This is due to their domestication and the influence of humans on their diet. 

However, it is important to note that dogs still require a certain amount of animal protein in their diet to meet their nutritional needs.

Common Chihuahua Stomach Issues

a drawing with the title dog vomit color guide. a tan dog sits in the middle and 6 colors surround it describing dog vomit

Chihuahuas have a higher risk of developing gastrointestinal issues due to their small size and delicate digestive system. 

Here are some common stomach problems that Chihuahuas may encounter.

Infections and Parasites

Infections and parasites can cause a wide range of stomach issues in Chihuahuas.

These can include vomiting, diarrhea, loss of appetite, and weight loss. 

Some common infections and parasites that can affect your Chihuahua’s stomach include:

  • Giardia
  • Salmonella
  • E. coli
  • Roundworms
  • Hookworms

If you suspect that your Chihuahua has an infection or parasite, it’s important to take them to the vet as soon as possible.

Bloat (Gastric Dilatation and Volvulus)

Bloat is a serious condition that can occur in dogs.

It happens when the stomach fills with gas and twists on itself, cutting off blood flow. 

It’s more likely to happen to dogs that are fed once a day, eat quickly, exercise right after eating, or are under stress.

Large breeds like Great Danes are more likely to experience bloat.

Symptoms of bloat can include:

  • Restlessness
  • Drooling
  • Swollen stomach
  • Vomiting

Bloat is a medical emergency and requires immediate attention from a veterinarian.

Inflammatory Bowel Disease

a small dog is sitting on the toilet with lots of blue toilet paper everywhere

Inflammatory bowel disease (IBD) is a chronic condition that can cause inflammation in the lining of the digestive tract. 

While the exact cause of IBD is often unclear, it’s thought that bacterial or parasitic infections can contribute to its development.

Symptoms of IBD can include:

  • Diarrhea
  • Vomiting
  • Weight loss
  • Loss of appetite

Diagnosis and treatment of IBD may require a combination of tests, including blood work, imaging, and endoscopy.


Gastroenteritis is a sudden onset of inflammation in the stomach and intestines.

Causes include bacterial infections, parasites, food allergies, liver or kidney failure, or ingestion of toxins.

Symptoms of gastroenteritis can include:

  • Vomiting
  • Bloody diarrhea
  • Loss of appetite
  • Lethargy

Treatment for acute gastroenteritis may include medications to control vomiting and diarrhea, as well as fluids to prevent dehydration.


a diagram with a dog in the middle and surrounding it are common foods toxic to dogs

Gastritis is an inflammation of the stomach lining.

Gastritis can be caused by ingestion of garbage, spoiled food, toxins, table scraps, or large quantities of food.

Symptoms of gastritis can include:

  • Vomiting
  • Loss of appetite
  • Increased thirst
  • Abdominal pain
  • Blood in vomit or feces

Treatment for gastritis may include withholding food for 24 to 48 hours, anti-vomiting medications, fluid therapy, or proton pump inhibitors.


Pancreatitis is an inflammation of the pancreas.

Some causes include a high-fat diet, obesity, and diabetes. It can be acute or chronic. 

Symptoms of pancreatitis can include:

  • Repeated vomiting
  • Hunched back
  • Diarrhea
  • Abdominal pain
  • Loss of appetite
  • Lethargy

Pancreatitis is an emergency, so getting to the vet quickly is crucial.

Treatment for pancreatitis may include IV fluids, medication for vomiting, withholding food and water for 24 hours, and low-fat food.

Intestinal Blockages

Intestinal blockages can occur when something obstructs the digestive tract.

Rocks, socks, rope, bones, and sticks are the most common objects that can cause these blockages. 

These obstructions can be harmful and require immediate veterinary attention to ensure your dog’s health and well-being.

Symptoms of intestinal blockages can include:

  • Vomiting
  • Diarrhea
  • Abdominal pain
  • Loss of appetite
  • Hunching or whining

Treatment for intestinal blockages may require surgery to remove the obstruction.

8 Tips to Relieve Your Dog’s Stomach Problems

If your Chihuahua is experiencing stomach problems, there are a few things you can do to help alleviate their discomfort. 

1. Adjust Their Diet 

If your Chihuahua has a sensitive stomach, it may be helpful to switch to a high-quality, easily digestible dog food and test for food allergies.

Wet food and raw food are easier to digest than processed kibble.

Avoid feeding your pup table scraps as this can lead to stomach upset. 

Ensure that your dog is not overeating or eating too quickly, as this can also cause digestive issues.

Take care not to feed excessive fat as that can lead to pancreatitis.

2. Provide Plenty of Water

Dehydration can exacerbate stomach problems, so make sure your Chihuahua has access to fresh, clean water at all times. 

If your dog is not drinking enough water, try adding a small amount of low-sodium chicken broth to their water bowl to encourage them to drink more or make some bone broth popsicles.

If your pup tends to tip over their water bowl, we have some foolproof solutions right here to tackle the challenge.

3. Lower Stress

Reducing stress is key. Stress can trigger diarrhea and bloat in dogs. 

If you have multiple animals in your household, ensure your dogs are fed separately to avoid stress and fast eating. 

Creating a calm and peaceful mealtime environment can significantly contribute to your dogs’ digestive comfort and overall health.

4. Try Probiotics

Consider probiotics as an option. These helpful bacteria can enhance your Chihuahua’s digestive well-being. 

You’ll find specialized probiotic supplements for dogs in your local pet store or online. This Native Pet Probiotic Powder is an excellent choice with 4 strains and 6 Billion CFU.

What sets this product apart is the thoughtful addition of prebiotics and bone broth, which synergistically work to nourish the gut’s beneficial bacteria and support the overall digestive system.

Adding probiotics to your Chihuahua’s routine will help promote optimal digestion and lead to a happy tummy.

5. Use a Slow Feeder Bowl or Puzzle Feeder

Opt for this Upsky slow feeder bowl or this Outward Hound puzzle feeder.

These tools encourage slower eating and engagement during mealtime. 

By extending the feeding process, slow feeders and puzzle toys promote better digestion and reduce the risk of issues like bloating. 

Incorporating these tools into your Chihuahua’s routine can contribute to their overall digestive health and well-being.

6. Consider Natural Remedies

There are several natural remedies that can help soothe your Chihuahua’s upset stomach. 

For instance, ginger can ease nausea and vomiting, while slippery elm can help soothe the digestive tract. 

Remember to consult your veterinarian before administering any natural remedies to your dog.

7. Exercise

Regular exercise is beneficial for your Chihuahua’s gut and overall well-being.

Taking your dog for a walk, preferably one hour before or after meals, is optimal. 

This timing helps prevent the risk of bloat, a serious condition where the stomach fills with gas and twists.

8. Consult With Your Veterinarian

If your Chihuahua’s stomach problems persist, worsen, or seem like an emergency, it’s important to consult with your veterinarian.

They may recommend additional treatments or tests to determine the underlying cause of your dog’s digestive issues.


Now you have your answer to “how big is a Chihuahua’s stomach.”

The size of a Chihuahua’s stomach can vary depending on several factors such as their age and size.

As a small breed, Chihuahuas naturally have smaller stomachs than larger breeds.

By considering their unique needs and implementing the tips mentioned above, you can ensure your Chihuahua leads a happy life, free from digestive troubles.

If you are intrigued by dog science intrigues you, check out our blog post on how big is a Chihuahua brain and how big is a Chihuahua’s heart.

Frequently Asked Questions

How Much Food Should a Chihuahua Eat a Day?

This depends on various factors, including their age, weight, activity level, and type of food. As a general guideline, Chihuahuas are typically fed about 1/4 to 1 ⅓ cup of dog food per day, split into two to four meals. 

How Long Is a Chihuahua’s Intestines?

A Chihuahua’s intestines are approximately 15 feet long, depending on their size. The small intestine is about 13 feet and the large intestine is around 2 feet. 

Do Chihuahuas Have Small Stomachs?

Yes, Chihuahuas have small stomachs, which means they cannot eat a lot of food at once. Overfeeding can lead to digestive problems and obesity.

Are Chihuahua’s Stomachs Sensitive?

Yes, Chihuahuas have sensitive stomachs, and they are prone to digestive issues such as vomiting, diarrhea, and constipation. A lot of Chihuahuas are picky eaters. It is essential to feed them high-quality dog food and avoid giving them table scraps.

How Many Stomachs Does a Dog Have?

Dogs have one stomach comprised of 5 different regions: the cardia, fundus, corpus, antrum, and pylorus. Their stomach contains approximately 10 times more acid than a human stomach, aiding in the breakdown of food. A dog’s stomach can retain food for a longer duration compared to a human stomach.

Why Is My Dog’s Stomach Making Loud Noises?

These sounds are usually caused by the movement of gas and fluids in the digestive system. Just like in humans, a dog’s stomach noises can happen when they’re hungry, digesting food, or experiencing normal digestion. 

However, if your dog’s stomach noises are a new thing or are accompanied by other symptoms like vomiting, diarrhea, or signs of discomfort, it’s best to consult with your veterinarian.

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