I had a clutch that was bigger then the hairlesses. If it is her 1st you can just see how she is by counting the babies and checking them every day and night. We didn't notice til a few days later that with her 1st clutch that she was eating them or not caring for some. Her second clutch I switched the babies gave her some normal babies from the ones that give use feeders for our snakes. Markiej breeds our snakes. So I breed enough to switch them.
If you take the hairless and breed it to the normal haired rat, you then get haired babies with the hairless gene. What you can do is take one of those babies and breed it back to the hairless this gives a chance of 50% hairless. Thats how we got our 3rd clutch. We took the baby when she was ready and breed it back to the dad and got a cltuch of 10 4 which were hairless. They all have hoods but are hairless. The hairless are born with thin light fir.
Monique