I have 2 brother gerbils who are probably under 5 months, I don't know for sure. I also have a really young gerbil, under 3 months. I'm using a split cage method to introduce them.
The tank is brand new, so it's neutral. I put all 3 in (separated, of course) and the 2 older ones immediately started trying to groom the young one. Now, they're all just ignoring each other, but the baby periodically tries to dig under and get to them.
How long should I wait to introduce them all together? I don't want to do it too soon, as if the bigger boys fought the little one they could probably seriously injure him before I broke it up.
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