ive got 2 baby guinea pigs, i would watch out if you get two boys though because i had 2 boys about 10 years ago and one killed the other one, and then bled to death himself from fighting with the other one
the two i have now are both girls and they dont fight at all, you have to get them a large hutch and run for the garden aswell, and if you dont handle them for a while they will start to bite. they are all flighty untill you pick them up and they calm down straight away