Thank you for helping with the analysis...They have full access to quality rat lab block and water bottle dangling in full reach of all...I try to keep the numbers down so that there isn't mass crowding in the tubs...

I was wondering about the dumbos, but don't have any experience with any other types of rats because all my feeders are dumbos...It's taken a while to get my colony going well...

I also made sure that I got a lot of different bloodlines in the breeding mix so that it's not just a continual breeding chain...I made friends with a dumbo breeder and she gave many healthy starters to get this breeding project off the ground. I will admit I'm trying to get a majority of blues for the most part, but that will take time and strategic hold backs unless all get knocked off...