Updated at: 02-01-2022 - By: petstutorial

Puppies are extremely susceptible to infections and illnesses So, when they experience nighttime diarrhea, it is difficult to determine the reason. We consider the possibilities and the treatments.
The process of raising puppies can be stressful, particularly for those who are new to puppy ownership. There are a lot of things to be aware of including following the schedule for vaccinations and getting foreign objects out of the puppy’s mouth! As if that’s not enough to be concerned about, a lot of puppies suffer more unpleasant issues than chewing on things that aren’t appropriate, and that’s diarrhea during the late at night. It’s not uncommon for puppies, however it could be an indication of something serious. Why does your puppy suffer from diarrhea during the night?
There are many reasons why your puppy could experience diarrhea during the night due to recent changes in diet or food allergies as well as illness or stress, medication, and parasites. If your puppy continues to have frequent diarrhea or gets worse, contact your veterinarian.
Let’s explore the reason why puppies get diarrhea at late at night, what you can do with it, and how to tell when to contact the vet.


Why Does My Puppy Have Diarrhea at Night?

Diarrhea can be a frustrating condition for puppies as it can indicate that your puppy is suffering from something from indigestion that is simple to a more serious condition. There are many kinds of puppy-related ailments which can be serious or minor with diarrhea as an indication. This makes it difficult for pet owners to decide if they should be worried or not.
So, what could be the reason for your puppy’s diarrhea at the night?

Dietary changes

A abrupt shift in your puppy’s diet could cause diarrhea at night. If a company ceases to make the food that your puppy has been eating or you’re unable to more afford the same costly brand, changes to your food at a moment’s notice can be a challenge for the stomach of your puppy.
Another point to consider is that the transition between puppy and adult foods can affect the digestive system of your puppy. Changes to your dog’s diet in a hurry isn’t possible since the stomach and intestines require time to adjust to the new nutrients.
Vets recommend a gradual beginning with a brand new food in order to help your dog adjust to the new food so that it doesn’t awake at late at night suffering from diarrhea. It is recommended to mix your new diet with the previous food slowly, and gradually introduce it into the diet of your dog. As you progress, increase the quantity of new food in the mix until it is what you feed your dog the most.


Animals are emotionally charged and their bodies react to stress in various ways. If your dog is anxious and their digestive system is stressed, it could react in a negative way, similar to how humans do. It is the same when your dog is unloved or abandoned. The dog may be experiencing anxiety and distress. Adjusting to this may be enough to cause stress-related diarrhea.

Illness or disease

Certain illnesses and diseases may cause your dog’s nighttime diarrhea. Certain of these ailments could be serious, others aren’t.
It could be as straightforward such as Colitis as well as Inflammatory Bowel Syndrome causing diarrhea in your pet. However, it could also be something that is life-threatening and serious as cancerous tumors that grow in your dog’s intestinal tract.



A nighttime bout of diarrhea in your dog may be an indication of something more serious, such as intestinal parasites. If your dog is drinking water from a polluted source, it might be suffering from parasites such as roundworms, hookworms, giardia or Coccidia. Young puppies with weak immune systems are more susceptible to infection.

Food Intolerance and Allergy

Like humans, dogs are also susceptible to food allergies and intolerance. Whichever breed you choose to use your dog could be sensitive to foods that is high in gluten, fats or dairy. This can cause diarrhea. Dogs are also susceptible to certain proteins, such as lamb or chicken, for example, that could cause diarrhea.
If your puppy is able to access food there are several foods that can be harmful for dogs. Look through this list of foods that are harmful to dogs to determine whether your dog is eating one of these food items.


If your dog is starting certain medications, such as antibiotics or dewormers it is possible for to experience diarrhea for a couple of nights. This is normal, and your vet will normally advise you on this before giving your dog medication.

What Do I Feed a Puppy With Diarrhea?

In the beginning, you must start introducing fasting to your puppy who is suffering from diarrhea. Refraining food for 12-24 hours, and offering regular water intake in small quantities will assist in removing the root cause and allow your dog’s digestive tract to get settled.
Before you begin, ensure that your puppy is in good enough health to handle it . Also, consult your vet to determine if it’s a wise idea to take this step.
After the fast, you must introduce food slowly and it is recommended to start by using binders in order to improve the consistency of stool. Choose simple and easy to digest foods such as rice white rice, water cooked pumpkin, potatoes with no skin cottage cheese, yogurt cooked oatmeal or macaroni high protein food items like chicken and eggs and herbs such as fennel. special dog food that is specially designed to treat stomach issues, and probiotics.



Late-night diarrhea isn’t anything that is unusual, it’s a normal digestive issue that occurs in all dogs. The causes vary from minor to very extreme. If you’re not and your animal, then it may be easy to determine the reason for diarrhea. In the case of neglect by pet owners, they may not know if they are able to tell if or when their pet is suffering from late-night diarrhea.
It’s a shame because, even though we would like dogs to be our pets, they’re also content when we show them how much we love them. If your dog is suffering from nighttime diarrhea, look at the stool. If you inspect the stool and if any trace of blood or worms is observed, it could be an indication that your dog isn’t suffering from normal food changes or intolerance diarrhea, but is suffering from another condition that is causing diarrhea.
If you notice that diarrhea has mucus, then it’s an emergency medical situation. There are always indicators and signs which indicate that a health issue causes diarrhea. Signs of dehydration, fever weakening, weakness, or inability to eat meals accompanied by diarrhea should be a reason to take you to your vet right away.
There is more information on the treatment of dogs suffering from digestive problems in our article on How to treat upset Stomachs in dogs. While nighttime diarrhea is not uncommon, it is and is not something to be concerned about. If you suspect that there is a major issue, bring your dog to the veterinarian for a physical exam.

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