Weight gain after ovariohysterectomy?

My only thought is that with women, hormonal issues lead us to consume vast quantities of chocolate, and to emotional eating. Women tend to curl up on the couch with the remote or a book. Dogs eat when their humans give them food. They exercise when their humans take them for walks. My thought is that dogs that are fat are that way because of their owners in at least 95% of cases. I have a Golden with hypothyroid...he got huge for a while. His thyroid contributed, but my husband and I are the ones who continued to fill his bowl to the top and let him eat to his heart's content. He still got lots of exercise, but too much food is too much food. After measuring his food for the last several years (to appropriate levels), he's back to his lean self. I think ALL dog diets and exercise programs need to be controlled, not just after spaying.