I have 1 male living with 5 females. I also have several other tanks with feeder rats in them and I generally have an additional 10 rats that are not breeders being housed. The harem has been living together for what seems like a month now or close to. I have noticed that the rats in the breeding tub are growing much faster then my non breeding feeders and I am hoping that is a sign that they might be pregnant?? I currently have about 30 snakes that I need to feed and by this time next year I am hoping to be at about 150 snakes so I need to figure out my rat breeding as soon as possible. This first colony was created mostly for an educational experiment for myself before fully investing into rat breeding. If anyone could give me an idea as far as how long the total mating to baby rat timeline will take I would appreciate it. I have read plenty of information online but I haven't found any real experience posts that say how long it takes from initial pairing in a harem to when the babies are born. Any help is appreciated. Thanks!!!