Introducing Adult Gerbils Introducing Adult Gerbils Adult Gerbils can be very territorial. They will usually be very aggressive towards a gerbil that they see as an intruder and will fight to the death to try and drive away unfamiliar gerbils. Gerbils aged under 10 weeks in age can normally be introduced to one another, but if one or both gerbils are over this age introductions can be very difficult.
Many people have different methods for introducing adults.
Even if the gerbils settle down, fighting can flare up days or even weeks later. Get yourself a tank or cage that you can split into two halves in a way that means that the gerbils on each side can see and smell one another but cannot bite or scratch one another through the bars. You can buy dedicated hamster style cages that have a wire partition down the middle. If you can't get one of them then you can either use a fine wire mesh fitted to a frame that fits diagonally in a glass tank, or you can use a smaller hamster style cage inside a larger cage or tank. Place one gerbil one side of the partition and the other on the other.