You simply use a different technique to milk NDs and other goats with smaller teats. It is not necessarily harder. I complained endlessly my first year with NDs because I had milked a cow before. However, once I figured out that I couldn't use the same technique, I actually prefer milking NDs to bigger goats. We've had NDs since 2002 and also had LaManchas for about 10 years, and I actually found the NDs easier to milk because there were several techniques I could use for milking them. With the LMs, it just basically squeezing with all three or four fingers, which meant my hands got tired really fast. With the NDs, I could switch between milking with (1) thumb, pointer, and middle finger, or (2) thumb, middle, and ring finger, or (3) rolling my thumb against my pointer finger. So, when one finger gets tired, I just switch to a different combination of fingers and thumb so that the stress gets spread around my hand.