the hardest most determined and best i ever kept was a bitch.for example many years ago ran her in a big deep place,the collar packed in and she was always mute,she would just destroy foxes.this day cos of collar packing up she was on game around 9 hours and when we got to her was still locked solid.this is just my case,a lot of excellent dogs too.to answer your question dog or bitch doesn't matter,heart and breeding matters.
i agree there dog or bitch heart n breeding ive had both