[HappyHippy]

Yup, I agree !
I know of a litter born to a pig of 7 months old  It does happen 

[melodrama]

They are both going to go off at 6 months.  If there is any more shenanigans they'll be seperated next to each other but I would hope thats not necessary.  You live and learn as they say and I will be taking extra special care next time to make sure they are the same sex BEFORE I take them home.  Thanks everyone for contributing x

[Berkshire Boy]

I think that some people worry too much. If your pigs become sexually active at 6 months it doesn't matter, they will be slaughtered before you even know that they are in pig. Enjoy them and if they want to practice let them.