How Long Does It Take a Dog to Digest Food

icon August 4, 2023

Understanding how long it takes for a dog to digest food is essential for providing proper care and ensuring their overall well-being. Just like humans, dogs' digestion is a complex process influenced by various factors. In this article, we will delve into the stages of canine digestion and the average time it takes for your four-legged companion to fully process their meals.

What Are the Stages of Canine Digestion?

A dog's digestive system is designed to break down food and absorb essential nutrients, which are crucial for their growth and energy needs. The digestion process can be broken down into several stages:


This is the first stage where dogs consume their food. Chewing is essential in this process, as it helps in breaking the food into smaller particles, increasing the surface area for enzymes to work.

Stomach Digestion

Once the food enters the stomach, it is mixed with gastric juices and stomach acid, which begin to break down proteins and kill harmful bacteria present in the food.

Small Intestine

From the stomach, the partially digested food moves into the small intestine. Here, digestive enzymes from the pancreas and bile from the liver aid in further breaking down proteins, fats, and carbohydrates. The small intestine is where most nutrient absorption takes place.

Large Intestine

The remaining undigested food, water, and waste products move into the large intestine. This section mainly absorbs water and electrolytes from the indigestible residue, forming feces.


Finally, the indigestible and unabsorbed waste material, along with some dead cells and bacteria, is eliminated from the body through the rectum and anus during defecation.

digestive tract of dog

How Long Does It Take a Dog to Digest Food?

The time it takes for a dog to digest food can vary based on several factors, including the dog's size, age, breed, the type of food eaten, and individual health. In general, the entire digestion process can take anywhere from 8 to 10 hours or even up to 24 hours in some cases. 

Here's a general chart outlining the average digestion times for different sizes of dogs:



Toy and Small Breeds (Chihuahua, Yorkshire Terrier)
  • Stomach Digestion: 1.5 to 3 hours
  • Small Intestine Digestion: 3 to 5 hours
  • Large Intestine Processing: 5 to 7 hours
  • Elimination: 8 to 12 hours
Medium Breeds (Labrador Retriever, Beagle)
  • Stomach Digestion: 2 to 4 hours
  • Small Intestine Digestion: 4 to 6 hours
  • Large Intestine Processing: 6 to 8 hours
  • Elimination: 10 to 14 hours
Large Breeds (German Shepherd, Golden Retriever)
  • Stomach Digestion: 3 to 5 hours
  • Small Intestine Digestion: 5 to 7 hours
  • Large Intestine Processing: 7 to 9 hours
  • Elimination: 12 to 18 hours
Large Breeds (German Shepherd, Golden Retriever)
  • Stomach Digestion: 4 to 6 hours
  • Small Intestine Digestion: 6 to 8 hours
  • Large Intestine Processing: 8 to 10 hours
  • Elimination: 14 to 24 hours

Factors Affecting Digestion Time

1. Age

Puppies and older dogs may have different digestion rates. Puppies have a faster metabolism and puppies' digestive systems are still developing. Senior dogs, on the other hand, may have a slower metabolism, and their digestive system may not be as efficient as it once was. However, it’s important to note that several studies claim that age doesn’t directly result in a digestive decline in dogs. It does cause other health problems like liver issues that, in turn, affect digestion.

2. Dog's Size and Breed

Smaller breeds often have faster metabolism and digestion times compared to larger breeds. The size and breed influence the size of the stomach and intestines, which can affect the overall digestion process.

3. Type of Food and Meal Size

The composition of the food, including the levels of fat, protein, fiber, and carbohydrates, can impact digestion time. Diets high in fiber may slow down digestion, while high-fat meals might take longer to break down.

Larger meals take longer to digest than smaller ones. Frequent smaller meals may lead to faster digestion compared to infrequent large meals.

4. Exercise and Activity

Dogs that don't get enough exercise often suffer from constipation. Regular exercise can promote healthy digestion. Dogs that are more active tend to have more efficient digestion. Exercise also stimulates bowel movements, which speeds up digestion. 

Related: Can I Walk My Dog 30 Minutes After Eating

5. Underlying Health Conditions

Certain health conditions, such as gastrointestinal disorders, pancreatic issues, or food allergies, can affect digestion time.

Understanding Digestive Diseases in Dogs

Digestive disorders in dogs can be caused by a variety of factors, ranging from dietary issues to underlying medical conditions. Some common digestive disorders in dogs include:

1. Gastroenteritis

Gastroenteritis in dogs refers to inflammation of the gastrointestinal tract, typically involving the stomach and intestines. It can be caused by various factors, including viral or bacterial infections, dietary indiscretion, parasites, and other underlying health conditions.

Symptoms of dog gastroenteritis:

  • Vomiting
  • Diarrhea
  • Loss of appetite
  • Dehydration
  • Abdominal pain
  • Fever

Treatment of dog gastroenteritis:

The treatment of gastroenteritis in dogs depends on the severity of the symptoms and the underlying cause. In mild cases, your vet may recommend withholding food for 12-24 hours to give the gastrointestinal tract time to rest and heal. And ensure that your dog has access to fresh water at all times to prevent dehydration. If dehydration is severe, your vet may administer fluids intravenously.

Depending on the cause and severity of the gastroenteritis, your vet may prescribe medication to alleviate symptoms like vomiting, diarrhea, and pain.

Gastroenteritis in Dogs: Symptoms & Treatment | Purina

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Gastroenteritis in Dogs

2. Pancreatitis

Pancreatitis in dogs is a condition characterized by inflammation of the pancreas. It can be acute or chronic and can vary in severity. The pancreas is responsible for producing enzymes that aid in digestion and hormones that regulate blood sugar levels. When the pancreas becomes inflamed, these functions are disrupted, leading to a range of symptoms. 

 It is essential to recognize the signs early and seek veterinary attention promptly. 

Symptoms of Dog Pancreatitis:

  • Vomiting
  • Loss of Appetite
  • Abdominal Pain
  • Diarrhea
  • Lethargy
  • Dehydration
  • Fever
  • Distended Abdomen
  • Changes in Heart Rate and Breathing

The treatment for pancreatitis in dogs depends on the severity of the condition. Mild cases might require outpatient care, while severe cases may require hospitalization. The primary goals of treatment are to relieve symptoms, support the dog's general health, and prevent complications.

Related: How to Comfort a Dog With Pancreatitis

3. Parasitic Infections

Parasitic infections in dogs can be caused by various types of parasites, including worms, fleas, ticks, mites, and more. The symptoms and treatments can vary depending on the specific parasite involved. 

For roundworms, tapeworms, nematodes, hookworms, whipworms and trichinella, you can take Puainta® Albendazole Tapeworm Dewormer for Dog, which can effectively remove worms from the body.

How to use

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4. Gastric Dilation-Volvulus (GDV) or Bloat

Gastric Dilation-Volvulus (GDV), also known as bloat or twisted stomach, is a serious and life-threatening condition that can affect dogs, especially large and deep-chested breeds. It occurs when the stomach fills with gas and fluid, causing it to expand and twist on its axis, leading to severe consequences if not treated promptly. GDV requires immediate veterinary attention, and the prognosis greatly depends on early diagnosis and treatment. 

Symptoms of Gastric Dilation-Volvulus (GDV) or Bloat:

  • Distended abdomen
  • Unsuccessful attempts to vomit
  • Restlessness and pacing
  • Excessive drooling
  • Rapid breathing and increased heart rate
  • Pale gums
  • Weakness and collapse
GDV bloat - Vetlife

5. Inflammatory Bowel Disease (IBD)

Inflammatory Bowel Disease (IBD) in dogs is a chronic condition characterized by inflammation of the gastrointestinal tract. It can affect various parts of the digestive system, including the stomach, small intestine, and large intestine. The exact cause of IBD in dogs is often unknown, but it is thought to involve a combination of genetic predisposition, immune system dysregulation, and environmental factors.

Symptoms of Dog Inflammatory Bowel Disease (IBD):

  • Chronic diarrhea
  • Vomiting
  • Weight loss
  • Poor appetite
  • Abdominal pain
  • Increased gas
  • Lethargy

6. Liver or Kidney Disease

These organs play a vital role in digestion, and when compromised, they can lead to digestive issues.

Symptoms of Liver Disease in Dogs: Symptoms of Kidney Disease in Dogs:
  • Loss of appetite
  • Weight loss
  • Vomiting and diarrhea
  • Increased thirst and urination
  • Jaundice (yellowing of the skin, eyes, and gums)
  • Lethargy and weakness
  • Abdominal pain or swelling
  • Increased thirst and urination
  • Loss of appetite
  • Weight loss
  • Vomiting and diarrhea
  • Lethargy and weakness
  • Bad breath with a chemical or ammonia-like odor
  • Dehydration
  • Poor coat condition
  • Mouth sores or ulcers

7. Colitis

Colitis in dogs is a condition characterized by inflammation of the colon (large intestine). It can have various causes, including dietary issues, infections, parasites, allergies, or autoimmune disorders. The condition can be acute or chronic, and symptoms may vary depending on the severity and underlying cause. 

Symptoms of Dog Colitis

  • Diarrhea
  • Straining to defecate
  • Increased frequency of bowel movements.
  • Weight loss
  • Lethargy
  • Abdominal pain
  • Excessive gas and flatulence


Understanding your dog's digestive process and how long it takes them to digest their food is vital to their health. Providing a balanced and nutritious diet tailored to your dog's specific needs can support their digestion and overall health. Monitoring their eating habits, and adverse reactions caused by digestive disorders, and consulting with a veterinarian when necessary will ensure that your faithful companion leads a healthy and happy life.

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