So after the introduction process (neutral ground, spending time in each others cage, and in the cage together) with my current rat Boo 3 months old and the new baby 8 weeks, which went well i put them in the cage together hopefully permanently. They have been great except for Boo has been trying to play but the little one has been squeaking a lot. I'm assuming Boo is trying to assert his dominance by pinning the baby down and pulling him. The baby squeaks and Boo does stop. I'm just not sure if I should be separating them for now and just continuing the introduction process? or to just wait it out? Cause neither of them is getting harmed.