Do horses (stallions) respond to women’s reproductive cycles?

I have two horses I have purchased not knowing they were pregnant. How will I know that they are close to delivery? Will they lose their appetite like my dogs do, or will there be other signs I should look for in the last month of pregnancy?                    via e-mail

I run a rescue ranch in Tucson for abused horses and dogs. I recently got in two young horses about six to eight months old, weighing in at about 500 pounds each. They have been badly branded, and they appear to be beaten up pretty badly. Their cuts are healing, and they seem to have that “baby resilience.” One of them has a bad limp in the right front leg; I suspect from being hobbled or