Quote Originally Posted by jason79 View Post
The only time I have problems is if you put two breeder sized males together with females present. The males probably will fight and hurt each other bad. Other than that you shouldn't have a problem reintroducing they may fight a little at first to establish the pecking order but I doubt anything serious.
Thanks, I wasn't sure if rats were as bad with introduction as mice. I had a colony of mice before and the females were actually the worst with introductions. I of course will probably make sure introductions are made on cleaning day to help eliminate some of the issues.