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How to treat mother dogs with sore or infected nipples
Make sure that the mother's nipples are used equally.
In order for nipples to stay in good shape, they should be used but not abused. A nipple that is overused can get irritated and sore rather quickly.
To help alleviate this soreness and help the nipple recover, make sure the puppies are using all nipples equally. However, a nipple should not be completely abandoned indefinitely.