1 If this happens after the dog is in estrus, you don't have to panic. It will be fine after a while, because dogs often have a phenomenon called fake pregnancy. When false pregnancy occurs, dogs will have swollen breasts and milk like nursing dogs.

If it is recent, it may be a milk knot. You need to massage her while applying hot compress.

If it's always there, it's a breast cyst or tumor. It is recommended to go to a pet hospital for treatment.