I am just starting my rat breeding systems and every time it seems like things are getting good they go downhill. Today I had checked a tub with a 1.3 male to female and the male was dead with basically all his internal organs gone, and also three dead babies. (babies about crawler size).. It seems like I have been having terrible luck with breeding rats... Mice i have no problem but I have been getting more cannibals in rats than mice. I use the lab block 4018, aspen bedding and water.. Any suggestions? What do you do when this happens? None of the moms are too old or too young, I just keep having these terrible situations where when something goes bad; it never gets better... To top it off my Pied Male died last Thursday.. Not a great week, help me out and tell me your set up and what you do with pregnant females either separate or keep them with the male? Please help..