Guineas are social animals and you very rarely get one that doesn't like being with other guineas, sometimes you get bullying, which you will have to make sure that there is none going on. Gizmo and his girlfriend should want to meet each other and should get along fine. Providing you introduce them on neutral territory and once they have been out with each other for a couple of hours or that your happy that they are not challenging each other, showing any aggressive/nasty behaviour or showing threatening behaviour then you can put them in the MALE'S hutch together. It will take them a little bit of time to work out dominance, however, providing you follow these two steps then they should be fine. Keep an eye that there is no bullying signs such as losing weight, resting in open parts of the cage, generally not wanting to be near their hutch mate etc. Make sure the hutch is big enough for two guineas (so one can escape from the other), that there are a couple places to hide, a couple of food bowls (one at each end of the hutch), a couple of bottles etc. You may want to wait until you guinea is a little older. Good luck. O0
