doesn't know that after you defeat Mother Brain and you are exiting Zebes (for the last time ever) that you can go down into the room where you got the bombs and blast a hole in the wall so that the Dachora and Etecoons can escape to safety. It adds about 30 seconds to your time (or a little more) which is why many speedrunners don't do it. The creators of the game as that you do though, since they're so cute and cuddly.