Canine mastitis is a painful condition that affects the mammary glands of nursing dogs. If left untreated, it can prevent successful nursing and lead to undernourished pups. It can also lead to a serious infection that will require veterinarian care. Fortunately, recognising signs early and learning to manage them can make the difference between a smooth whelping period and serious health risks for both mother and puppies.
Mastitis is the inflammation of the mammary glands, usually caused by a bacterial infection. Small scratches or injuries on the teat that can naturally occur during nursing can become infected with bacteria and cause and become inflamed.
Canine mastitis most commonly occurs during the first few weeks of whelping, but it can develop at any stage of feeding.
Several factors can contribute to the risk of mastitis in dogs, most of which can be fixed before it becomes a problem. Here are some of the most common causes and risk factors:
Breeders should carefully check on lactating dogs daily and check for signs of canine mastitis. Key things to look out for are:
If you notice these signs, speak to your veterinarian immediately. Canine mastitis can progress rapidly if untreated.
Fortunately, canine mastitis can easily be treated. Depending on the severity of the infection, here are the common treatment options:
In severe cases, abscesses may form in the mammary glands which will require some draining. When this happens, you may need to start bottle feeding your puppies as the infected glands should not be used. If you start to notice signs of canine mastitis, it may be good to have puppy formula and bottles on hand in case this happens.
Managing the whelping process carefully is key to prevention of canine mastitis and avoiding complications down the line. Here are some suggestions on what breeders can do to prevent mastitis:
Sometimes the dam cannot nurse effectively from her affected glands. If this happens, breeders should have bottles or tube feeding on hand to keep puppies healthy and well-fed. Make sure you weigh your puppies daily and ensure they are gaining weight steadily.
It’s advisable to talk to your vet if you suspect canine mastitis. But always veterinarian help if you see any of these signs:

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