My boar Yorkshire is about 3yrs old and he has tusks that stick out about 2-3in. He weighs 400+ pounds. The sows which are about the same age and weight show a little bump where their tusks would point out, it doesn't grow as much on a sow as a boar. When they open their mouths they look about an inch long. The females are blue butts that were Yorkshire/Hampshire crossed. I butchered two last month, one for sausage which weighed about 400 pounds on the hoof and which was a cut male, his tusks never grew big. He was only 1 1/2yrs old though. The sow I butchered for cut meat was over 2yrs old and her tusks never grew out. The longer you allow them to live will decide how long the tusks grow.