Okay - But that is not the case. I dont create pages with the same names. I am very anal with that sort of thing. In this case I was adding pages of different species of mammals. Each species I entered (which cant possibly be in conflict with any other page name), is unique.
How about an Error Message saying [ There is already a page called [ elephants.php ] . Please enter a unique name ] ?
If I have pages that would have the same name, I would enter where they belong, such as [ african_elephant.php ], [ asian_elephant.php ] and not attempt to do two pages called [ elephants.php ]. Correct and unique file names are important to be able to navigate around in a structure.