More then one

Question
I have two guinea pigs right now, they r half sisters, I also have a really big cage. They are about 1 and a half. I am woundering if i would be able to get another one and keep it in the same cage. The cage is definetly big enough but thats not what i am worried about, i am worried about them getting along. Would they get along or not because if they won't i probally won't get another. I have had them for over a year now. And i would like to  get just one more and thats it. Do guineapigs get along easily, and the one i will get would be younger so would they get into fights. My guinea pigs are full grown but they are really small for there age. Would they get along? They r both girls right now.

Answer
Hello Rebecca,
guinea pigs actually get along quite well. I'd make sure to get a young guinea pig too. If you get another one place all three ooutside the cage in a neutral territory and let them find each other and sniff each other. Here is a website that I really like about introducing guinea pigs.
http://www.cavyspirit.com/sociallife.htm#Introductions
:)