Help! My Pregnant Dog Has A Bubble Coming Out! 

It is not uncommon to experience moments of confusion and worry when faced with unexpected occurrences during your dog’s pregnancy. 

One such concern that may have caught your attention is the presence of a bubble coming out from your pregnant dog. 

We’ll delve into the reasons why pregnant dogs may have a bubble coming out and what to do. 

Here’s why your pregnant dog has a bubble coming out

Possible reasons why a pregnant dog has a bubble coming out from their genital area includes emergence of the mucus plug, amniotic sac when they are in labor, prolapsed uterus and discharge due to an infection.

My Pregnant Dog Has A Bubble Coming Out

Reasons why a pregnant dog has a bubble coming out

Emergence of the mucus plug

During pregnancy, a mucus plug forms in the cervix of a pregnant dog. The mucus plug is a thick, gelatinous substance that seals the cervix, and acts as a protective barrier to prevent bacteria from entering the uterus and potentially harming the developing puppies.

As a dog’s pregnancy progresses and the time for labor approaches, the mucus plug naturally starts to loosen and may be expelled from the genital area. 

This expulsion of the mucus plug is a normal part of the pre-labor process and indicates that the dog’s body is preparing for birth.

The mucus plug can appear as a bubble-like mass, often clear or slightly bloody in color. It may be passed all at once or in smaller portions over a period of time. 

Some dogs may expel the mucus plug discreetly, while others may have a more noticeable discharge.

The emergence of the mucus plug is  normal and expected during the late stages of pregnancy. However, it’s important to monitor your dog closely for any other signs of labor or complications, such as prolonged or intense contractions, distress, or abnormal discharge. 

Related: Pregnant Dog Is Digging: Here’s why 

Amniotic sac when they are in labor

The amniotic sac is a protective membrane that surrounds each individual puppy inside their mother’s uterus during pregnancy. 

It contains amniotic fluid, which provides a cushioning and nourishing environment for the developing puppies.

When a pregnant dog goes into labor, the amniotic sac plays a crucial role in the birthing process. 

As the contractions become stronger and more frequent, the pressure exerted on the amniotic sac increases and eventually it ruptures, releasing the amniotic fluid and initiating the birth of the puppies.

The rupture of the amniotic sac is commonly referred to as the “water breaking.” It can show up as a gush of fluid or a slow trickle, depending on the strength of the contractions and the size of the puppy. 

The amniotic fluid is typically clear and may be tinged with blood or mucus.

Once the amniotic sac ruptures, the mother will continue to have contractions to help expel the puppies. The delivery process can vary in duration and intensity, with the mother pushing and contracting to help each puppy be born.

It’s important to note that if the amniotic sac ruptures but your dog does not begin active labor within a reasonable timeframe, that is in 2-4 hours, it could indicate a problem and veterinary assistance should be sought. 

Also, if your dog is having difficulty delivering a puppy after the sac has ruptured, medical attention is necessary to ensure the safety of the mother and her puppies.

Prolapsed uterus

A prolapsed uterus is a serious condition that can occur in pregnant dogs but is relatively rare. It happens when the uterus protrudes or partially protrudes from the vaginal opening, often resembling a bubble-like structure.

During pregnancy, the uterus expands to accommodate the growing puppies. In some cases, the increased pressure combined with weakened pelvic muscles can lead to a prolapse of the uterus. 

This may occur during late pregnancy or during the birthing process.

A prolapsed uterus is considered a medical emergency as it poses significant risks to the mother and her puppies. 

It can cause discomfort, pain, and potentially life-threatening complications. The exposed uterus is vulnerable to infection and trauma, and the blood supply to the affected tissues may be compromised.

Related: Why is my dog shaking after giving birth? Here’s why

Discharge due to an infection

During pregnancy, a pregnant dog may develop a vaginal discharge due to an infection. Infections can occur for various reasons, including bacteria, fungi, or viruses entering the reproductive tract.

Common signs of an infection in a pregnant dog include a foul-smelling discharge, changes in color or consistency of the discharge, increased frequency of urination, discomfort, and signs of illness such as lethargy or loss of appetite. 

The discharge may appear yellow, green, brown, or bloody, depending on the type and severity of the infection.

Infections in pregnant dogs can be caused by a variety of factors, including poor hygiene, a weakened immune system, preexisting reproductive tract abnormalities, or exposure to infectious agents.

Infections can pose risks to both the mother and the developing puppies. They can lead to complications such as premature delivery, stillbirth, or the spread of infection to the puppies during birth.

Immediate veterinary attention is important to prevent the infection from worsening and to ensure the best possible outcome for the mother and her puppies. 

What to do when your pregnant dog has a bubble coming out

If you observe a bubble or any protrusion coming out of your pregnant dog’s genital area, it is important to take immediate action. Here’s what to do:

Stay calm 

It is important to remain composed and focused to provide the necessary care for your dog. Observe and assess the situation, take a close look at the bubble or protrusion to determine its characteristics.

Note the size, color, texture, and whether it seems to be causing any discomfort to the dog.

Look for signs of distress, discomfort, or other abnormal behaviors. Note any changes in the size or appearance of the bubble or protrusion.

Contact a veterinarian 

Reach out to your veterinarian or an emergency veterinary clinic as soon as possible. Explain the situation, provide details about the bubble or protrusion, and follow their advice.

Remember, professional veterinary assistance is important in these situations. A veterinarian will be able to provide a proper diagnosis and recommend appropriate treatment based on the specific condition of your pregnant dog.

Do not attempt to push it back in

It is important not to try to push the bubble back into your dog’s body. This can potentially cause further harm or complications.


If you notice a bubble or protrusion coming out of a pregnant dog’s genital area, it is important to take immediate action and seek veterinary assistance. The bubble could be due to various reasons, each requiring professional evaluation and intervention.

Remember to stay calm, observe the situation, and contact a veterinarian as soon as possible. It is also important not to attempt to push the bubble back in.

The veterinarian will assess the condition, provide an accurate diagnosis, and recommend appropriate treatment to ensure the well-being of your pregnant dog and her puppies.

Always prioritize the safety and health of the dog by seeking professional veterinary guidance in such situations.