Why are my female dogs two back breasts swollen?

She's not pregnant and she just went into heat for the second time about 5 months ago. It's only the two back breasts...they're bigger than the others. Why is this?

    Why are my female dogs two back breasts swollen?

    She's not pregnant and she just went into heat for the second time about 5 months ago. It's only the two back breasts...they're bigger than the others. Why is this?...
    General Dog Discussions : Why are my female dogs two back breasts swollen?...

    • Why are my female dogs two back breasts swollen?

      Why are my female dogs two back breasts swollen? General Dog Discussions
      She's not pregnant and she just went into heat for the second time about 5 months ago. It's only the two back breasts...they're bigger than the others. Why is this?

      Why are my female dogs two back breasts swollen?

      Why are my female dogs two back breasts swollen? General Dog Discussions
    • She is either pregnant, in heat, or having a false pregnancy. A false pregnancy is caused by an hormonal imbalance and should be treated by a vet. Dogs with false pregnancies sometimes become aggressive.