Here is a pictures of a nice Kinder doe. Notice that her hind legs are a little posty which could be a sign of good milk production. This was a picture of her udder as a kid. This is another sign that she will be a very good milking Kinder.
I am pretty niave about goats. I had twin nubian x several years ago but they were pets, not milkers (had to move cross country before given the chance to breed). The teats on this girl seem small. Is it because of the angle, age, a kinder trait?