I have 2 really pet rats. Dewey and Kibbles. They are smart, know when they are getting into something they shouldnt be. Come when I call their name (only when they want to though )
My other rats are spoiled in the way of feeders, the girls all hang out in a large cage with toys and hammocks and a wheel when they are resting. The boys get a large tub to themselves to chill in with us in the living room.
But my boys kibbles and dewey are allowed to run all over the place and have a ball. Rats are great pets and I would still have them even if I wasn't raising feeders.