Bootstrap DropDown menu works on mouse click event. It doesn't support on hover DropDown by default. But using following bootstrap plugin we can make it works for mouse hover event and it's so simple.
http://cameronspear.com/blog/bootstrap-dropdown-on-hover-plugin/
Download the plugin, include it in your project. We write data-toggle="dropdown" in the markup to make it a dropdown menu which works on click event. Instead of that one, write data-hover="dropdown" and you are done. Now both options will work on your project.
