Just like people, rats have personalities. All my ASF's that I have are extremely nice. You can pick them up and pet them and they don't try to get away. I heard the exact opposite before I bought them though.
I've been buying feeder rats and mice for years and have been bitten quiet a few time by them. There were some that were really nice and didn't mind being handled and then there were the little evil suckers. I personally like the little evil ones because I feel a sense of joy when they get tapped out by one of my snakes![]()