How Quickly Can Mastitis Develop in Dogs?

by Melodie Anne Coffman Google
    Check daily for signs of mastitis.

    Check daily for signs of mastitis.

    Jupiterimages/ Images

    Mastitis is a bacterial infection that can affect the milk ducts of a new mama dog. While each canine is different, generally, once a pup becomes infected, mastitis spreads rapidly -- in a matter of days in some cases.

    Signs of Infection

    Lethargy and loss of appetite are some of the initial warning signs of mastitis. Of course, your furry friend just had a litter of puppies, so the same symptoms could just be side effects of delivery. She’ll probably also have redness, pain and swelling in her abdomen or pus leaking out of one or two teats if she has mastitis. As the infection progresses, some newborns may howl more than normal, since they’re not able to eat. Your new mama dog may avoid feeding her pups altogether.


    Check your nursing mom's teats every day for abnormalities. Mastitis spreads quickly, so take your four-legged chum to the vet right away if you suspect a problem. Untreated, the infection can completely block milk ducts, cause tissues to die and ultimately force mastectomy. Plus, depending on the treatment your vet decides on, you may be left having to bottle-feed the entire furry brood yourself.

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    About the Author

    Melodie Anne Coffman has been writing for various online and print publications since 1996, specializing in human and animal nutrition. After receiving her master's degree in food science and human nutrition, she opened up her own nutrition consulting business in the New England area.

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