| Hmm, 8 months. That's not a real good age to be introducing cavies. Basically you want to avoid adding new cavies between 9 and 14 months old (depending on the cavy this could be 8 - 18 months old). But more depends on the types of pigs you want to put together.
As it is, if both your boars are really close to the same age and they are approaching the peak of their hormones you're probably going to see a lot of rumblestrutting, reversal of dominance, and maybe a few fights. It's your job to keep this time as smooth as possible so that they stay friends.
I would concentrate on your existing boars. But, if you are set on getting more guinea pigs then I would suggest a bonded pair that you keep seperate from your boys that you have now. I would definately stay away from females, it might drive your boars crazy - especially at this age. If you were only looking at adding a third boar then I would actually say go younger. I can't imagine an adult pig being very receptive to two hormonal boys. But again, depends on the pigs.  |