I just got rid of a bunch of my older breeder rats and now im down to two, a male and a female. It would be very convenient to house them together but the female would probably always be pregnant..is this ok? I mean, is it unhealthy for her to have babies that often?
it is perfectly fine...I run rats 1:8 and they breed 15 cycles in perfect health.
people who argue this are worried about pets not production of feeders.