my boss has a 100 + buffalo and they are in a 40 acre pen and he has the smaller ones in some smaller pens. but even when they see us everyday. they are still really really wild when feeding them in the big pen i have had the bulls charge the skidsteer. everytime you go into the pen you risk your life so i would say go for the hunt and dont feel guilty about it cause cause they are alot more wild then alot of free roaming buffalo. and good luck