Tucker isnt pure yorkie but I know if I had his ears shaved they would stand, cause on a occasion when he has tilted his head just right his ears have popped up for a few seconds, however they are HUGE... like he could fly away if the wind was just right HUGE.
.. I love his floppy ears. He has so much expression in his face that his floppy ears are a added bonus. I can understand why some want thier yorkies ears to stand, it is the standard and they look so darn cute with thier little button ears.