Answer

Guinea pigs are naturally social and generally adapt well to the introduction of a new cage mate. Keep only one male to a cage. Two males kept together in one cage may become territorial and will fight. Two females usually do well together.

Make the introduction when there is no other excitement. Try to set things up in advance in favor of the introduction by using a freshly cleaned and disinfected cage, with plenty of fresh bedding and some treats in different corners. Put both guinea pigs in AT THE SAME TIME and let them look for the treats. You do this so it is neutral territory. Put one pig into another's territory is asking for trouble. If they fight, remove the aggressor and leave the other one in the cage; try again a day later. Companionship is very important to guinea pigs, since they often live in large groups in the wild.

So, yes, I think you should try introducing them in the new hutch as that is neutral territory. Only put them in it supervised for small periods of time until you are sure they are getting along. If two are males you may need to think about re-homing one of them. If you have a male and female together be ready for babies.

Dr. Hinson