So i have a 3-4 month old rat i have named Gus and recently bought 2 more babies from a breeder. They are 5 weeks old i think and tiny compared to Gus. I tried to introduce one of the new babies and Gus and I had a terrible moment of fright. Gus actually grabbed the little one by the neck and started to drag him over into the corner of the room! This didn't feel safe to me, so i immediately separated them before either of the two could get out of my sight. Exactly what happened there? Something told me i shouldn't let it go on, but at the same time i want the three of them to get along together. If i did something wrong in this, let me know. I want them to play nice together, but am a little afraid to let them be around each other.