It really just depends on the horse but usually the girl horses are very calm and the male horses tend to be a little bit friskier. I know with experience. My horse Bandit hates to be ridden on so he will just stop. He will not move for anything. It is kinda funny but annoying too. He is in training right now to be trained to carry the flag at horse shows and rodeos... Fun huh? I hoped this helps. If you want a horse that is easy to train and isn't so stubborn, get a female. If you want something to work with and have fun training, get a male. Either way horses are a blessing in this world.