made a mistake today,, i have 7 x 10 month old KKs in one section, and 2 in another jioning section all boys about 1/3 acre each separated by electric fence, all been fine for 3 weeks ( thats how long ive had the 2) showing no interest in each other so i thought i would let them mix as i could use the space.... BIG MISTAKE... only one of the 2 newer ones went though the gate, the more dominent one, while i was trying to temp the other one though all hell broke loose, the one was fighting with everyone, i thought they were just sorting out the pecking order and left it a few minutes but it got worse so i managed to get the one back into his area again,,,, for the future is it a fact that after 5 months they will not mix as i did it before with 4 and 3 KKs x 5 month olds and no problem hence my current 7.... learning now that pigs dont just squeak,, never heard these noises that a bunch of upset pigs make, thought a had a bull in with them