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Mastitis in Dogs

Mastitis is a real concern for pregnant dogs and for those who own them. In this post, our Carrollton vets answer questions about the symptoms, causes and treatment of mastitis in female dogs.

What is mastitis in dogs?

Mastitis is a condition of swollen mammary glands in female dogs, which can occur with or lead to infection.

Mastitis typically develops after a female dog has given birth as a result of an improperly sanitized birthing location or premature weaning of the puppies. There are several types of mastitis that a dog may develop.

  1. Acute Mastitis. When the mammary gland swells painfully, potentially leading to the mother's avoidance of feeding the pups or lethargy.
  2. Septic Mastitis. Inflammation of the mammary gland that leads to heat, pain, milk discoloration and potential sickness in the mother.
  3. Non-septic Mastitis: Inflammation of the mammary gland that is not caused by bacterial infection.
  4. Chronic Mastitis: Swelling of the mammary gland that lasts long-term. This type of mastitis is not as visibly obvious as other types as it does not share their symptoms.
  5. Gangrenous Mastitis. Blackening of the teat, sometimes accompanied by darker stomach tissue, as well as illness in the mother. 

With all of these different types of mastitis, owners of expecting mother dogs may want to know how to identify postpartum mastitis.

What does mastitis look like in dogs?

Symptoms of mastitis in dogs can vary, as some symptoms affecting the mammary glands and teat may or may not manifest in the mother. As previously stated, certain types of mastitis cause discoloration of the teat or even discoloration and blood in the milk. Here are some common signs of canine mastitis:

  • Swelling of the teat or mammary glands
  • Discoloration of milk/discharge
  • Refusal to feed puppies
  • Fever in the mother
  • Depressive behavior
  • Changing blood pressure or heart rate
  • Vomiting

If you notice any of these symptoms in your postpartum pup, contact your vet immediately.

What are the causes of mastitis in dogs?

There are a few common causes of mastitis in pregnant dogs that owners should be aware of in order to prevent the condition. Several of these factors include:

  • Bacterial or fungal infection of the teat or mammary area in pregnant dogs
  • Loss of newborn puppies
  • Milk clots or backed-up milk
  • Unsanitary whelping box
  • Damp birth site 

How to Treat Mastitis in Dogs

Now that you know the signs, symptoms and causes of mastitis in dogs, you may want to know how to get your pup treated for it.

To first diagnose mastitis, your veterinarian will perform a full physical exam, and will sometimes collect necessary information on the mother's pregnancy and labor. 

Depending on the severity and type of mastitis your dog contracts, antibiotics or even surgery may be necessary for treatment. If the mother is still nursing her infants, the veterinarian will likely need to milk the glands until the infection has cleared up. In addition, milking the glands allows the owner or veterinarian to examine the degree of swelling, temperature, and other conditions of the teat. Mild cold compresses may also be beneficial for easing the discomfort of the dog.

In general, mastitis is usually fairly treatable at home. Consult your vet for best practices with your pup suffering from mastitis.

Note: The advice provided in this post is intended for informational purposes and does not constitute medical advice regarding pets. For an accurate diagnosis of your pet's condition, please make an appointment with your vet.

Want to learn more about how to prevent or treat mastitis? Contact our Carrollton vets today.

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