I was reading the latest issue of Horse & Rider (October 2007 issue) and I found an article by the trainer Bob Avila in which he says that he thinks that gender does matter when training a horse. I was wondering if some of you thought that mares are more challenging. I really don't know what to think. I've trained a few horses in my life and so far the mares have been more of a challenge, I just don't know if it was their personalities or not. So, could you guys help me by answering my poll and maybe giving a reason?