Okay, I asked a similar question a couple of days ago and got little help. My daddy rat has been living by himself for 5 weeks while the mother has been weaning the babies. I now have the mother living with the girls in a different cage now while the 5 week old males still live in the aquarium. Now, I need to introduce the daddy to his babies but Im not sure if he knows that they're his. He heard their squeekings while they were babies and he was also with the mother while she was pregnant. Is it true if he knows that they're his young, and if so would it be safe to let him see his children in the aquarium? I just wanna put him in there until he feels comfortable with them, but I if it poses a risk of one of them getting hurt I wont do it. I'll read each and every comment thoroughly, while ignoring and possibly reporting ignorant answers. Appreciate it!