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Originally Posted by Nancy1999  I don't think estrogen is linked to aggressive behavior is it? I mean I've never read that spaying is a good option for aggressive dogs, neutering yes, but spaying no. I know female dogs who have given birth will often become aggressive, but this is not from the estrogen, as it subsides somewhat after giving birth, and other hormones become more dominant for a time. |
I know that two unspayed females are more likely to fight than two spayed females. I'm not sure of the science in that, though.