How Long After A Dog Has Puppies Do Her Nipples Shrink?

Getting a new puppy is an exciting time for any dog owner. However, if your dog recently had puppies, you may be wondering how long it takes for her nipples to shrink back to normal size after nursing. This article will provide a comprehensive overview of the nipple shrinkage process in mother dogs post-weaning.

We will start by looking at the timeline of dog pregnancy and nursing. Next, we will examine the weaning process and what happens after puppies are fully weaned. The main focus will be on the physical changes in the mother dog’s nipples and mammary glands during this time. Expectations for nipple appearance and care guidelines will be provided. Finally, potential complications that can impact nipple shrinkage will be discussed.

By the end of this article, readers will have a complete understanding of the post-weaning nipple shrinkage process and timeline in mother dogs.


The gestation period for a dog is around 63 days from conception to birth (South Seattle Vet). During this time, the dog’s body undergoes many changes as it nurtures the developing puppies.

One of the most noticeable changes is in the dog’s nipples. Nipples will usually begin to change in appearance between 3-5 weeks after conception. The nipples will become larger, elongate and protrude more. Their color will also darken and become more prominent (Rexi Pets). This happens as the mammary glands prepare to produce milk. The darkening of the nipples is caused by increased blood supply to the area.

By the end of a dog’s pregnancy, around 8 weeks, the nipples will be substantially larger, darker and more noticeable. They will protrude prominently in preparation for nursing puppies after birth (A-Z Animals).


Puppies begin nursing from their mother immediately after birth. The puppies will nurse approximately every 2-3 hours for their first two weeks of life (1). The stimulation of the mother dog’s nipples from the puppies nursing helps initiate milk production. Puppies can nurse anywhere from 5-15 minutes per feeding in the beginning (2).

Puppies continue to nurse frequently, around 8-10 times a day, during the first month of life (1). The nursing stimulates the mother dog’s mammary glands to produce milk. As the puppies grow, the frequency of nursing slowly decreases. By around 4 weeks of age, puppy feedings drop to 5-8 times a day. Puppies will nurse from their mother for 6-10 weeks before naturally weaning (2).

The mother dog’s nipples remain enlarged and extended during the nursing period due to the constant stimulation from the puppies. Once the puppies are fully weaned around 8-10 weeks of age, the mother dog’s nipples will gradually begin to shrink and return to normal size over the next several weeks as she discontinues milk production.



Weaning puppies off nursing typically begins around 3-4 weeks of age. At this stage, a dish of water and softened puppy food should be introduced to supplement nursing. The goal is to slowly transition the puppies from nursing to eating solid food over the course of a week or two.

According to PetMD, the weaning process involves removing the mother dog from the puppies for 1-2 hours, 2-3 times per day initially. This encourages the puppies to try the water and softened food while mom is away. The time spent separated can be gradually increased over the following days and weeks.

Purina recommends starting weaning by offering a gruel made of softened puppy food blended with milk. This soft, mushy food makes it easier for puppies to lap up and swallow during the transition process. The food can be gradually made more solid over time.

By weeks 5-6, nursing sessions should be reduced to 2-3 times a day maximum. At this stage, the puppies should be eating solid food well at regular intervals throughout the day. Most puppies are fully weaned between 6-8 weeks old.

It’s important weaning happens gradually. Abruptly separating puppies from nursing can lead to health issues. Following the above guidelines will allow them to adjust at a healthy pace.


After the puppies are fully weaned, usually around 4-6 weeks of age, the mother dog’s milk production will begin to naturally decline as the puppies are no longer stimulating milk letdown by nursing. However, her mammary glands will still contain milk and stopping lactation completely can take some time.

According to, while milk production will eventually cease within a week or two after weaning, the mother dog’s nipples can remain enlarged for several weeks [1]. The key is to avoid any stimulation of the nipples which could trigger further milk production.

To help speed up the drying up process, it’s recommended to separate the mother dog from her puppies so she is not tempted to continue allowing them to nurse. Reducing food and water intake for a day or two may also help halt milk production more quickly.

Nipple Shrinkage

After weaning, a dog’s enlarged nipples will gradually shrink back to their pre-pregnancy size and appearance. This process usually takes 4-10 weeks on average after weaning completes, according to veterinarians ( However, the exact timeline varies between individual dogs and can be affected by factors like the number of puppies nursed, duration of nursing, and hereditary traits.

The nipples shrink through the rebuilding of mammary gland tissues that expanded during pregnancy and lactation. Hormones signal the mammary glands to stop producing milk after weaning which allows them to regress in size. The extra blood flow to the nipples also decreases which reduces swelling and engorgement.

Dogs who nursed larger litters for longer durations often take a bit more time for their enlarged nipples to fully shrink back down. In rare cases, some swelling and elongation can persist long-term after weaning numerous litters. Consulting a vet is advised if nipple shrinkage seems delayed beyond 10 weeks post-weaning.


A dog’s nipples go through distinct changes before, during, and after nursing puppies. Before pregnancy, a dog’s nipples are small, with minimal pigment. The areolas are also quite small and blend in with the surrounding skin and fur. According to, around 2-3 weeks after conception, the nipples start to enlarge and protrude more. They take on a slightly deeper pink color and the areolas become more defined. This early darkening and enlargement is one of the first signs a dog is pregnant [1].

During pregnancy and nursing, a dog’s nipples become much more prominent as they prepare to produce milk. According to, they are visibly larger, elongated, and darker in color compared to a non-pregnant dog. The areolas also increase dramatically in size. The nipples may appear swollen and protruding significantly from the body [2]. These changes help the newborn puppies locate and latch onto the nipples for feeding.

After weaning the puppies, usually around 6-8 weeks after birth, the mother dog’s nipples start to shrink back down over the next several weeks. However, they rarely return to the exact pre-pregnancy size and appearance. The nipples often remain slightly larger and darker than before. Though no longer producing milk, they retain a degree of elongation and protrusion compared to nulliparous dogs [1].

Care During Weaning and Shrinkage

It’s important to properly care for a mother dog’s nipples as they start to shrink after weaning. The nipples can be prone to infection or irritation during this time. Some tips for care include:

Applying a warm compress to the nipples can provide relief if they are sore or irritated. Make sure the compress isn’t too hot. It should feel pleasantly warm [1].

Putting a t-shirt on the dog can protect the nipples from being irritated by the puppies. The cloth creates a barrier so the puppies can’t access the nipples [2].

Gently expressing milk from the nipples can provide relief, especially if mastitis has developed. Frequent expression keeps the milk flowing and prevents clogs [3].

Keep the nipples clean and dry to prevent infection. Use a gentle cleanser and pat dry.

Monitor for signs of mastitis like fever, swelling, and redness. Seek veterinary care if mastitis develops.

Allowing the puppies to continue nursing for a short time after starting the weaning process can help keep the milk flowing and prevent clogged ducts.

Make sure the mother dog stays hydrated, as nursing requires extra fluids.


After pregnancy and nursing puppies, some female dogs may experience complications with their nipples. One common issue is mastitis, which is an inflammation of the mammary glands. Mastitis is often caused by a bacterial infection that enters the teat canal (VCA Animal Hospitals, The nipples and mammary glands become red, swollen, and painful. Mastitis requires veterinary treatment with antibiotics, anti-inflammatories, and warm compresses. If left untreated, it can lead to abscesses or other serious health issues.

Other abnormal nipple issues may also occur after pregnancy and nursing. Some signs to watch out for include crusting, bleeding, ulceration, and abnormal discharge. These could be signs of infection, trauma, or cancer. It’s important to have any nipple abnormalities checked by a veterinarian, especially if they persist after weaning is complete. With proper examination and treatment, most nipple issues in dogs after pregnancy can be resolved.


In summary, a dog’s nipples will go through significant changes during pregnancy, nursing, weaning, and post-weaning. While the nipples enlarge and become more pronounced during pregnancy and nursing, they will shrink and regress in size after weaning is complete.

It’s important to monitor your dog’s nipples throughout this process. Look for signs of engorgement, mastitis, or other complications during nursing. After weaning, ensure the nipples are regressing to a normal size and appearance. Contact your veterinarian if you notice any abnormalities, discharge, or swelling.

With proper care and observation, your dog’s nipples should return to a flat, relaxed state within weeks after weaning is finished. This process is a normal part of the reproductive cycle. By watching closely and providing support, you can ensure your dog stays comfortable and healthy.

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