If this story doesn’t prove that, nothing does.  Two eagles in Minnesota got into a fight over territory.  These two cowboys played interlocked talons so deeply, they were unable to fly.  They played chicken (pun intended) all the way to the ground, with each refusing to let go of the other.  Remarkable they were fine.  A wildlife expert wrangled them in the back of her pickup.  During the transfer back to the wild, one got up and bailed, leaving the other one.  The driver heard him shout “And Stay Out!”.

To a woman, this seems really stupid, but as a man I toooootally get this.  It’s hardwired into out DNA.