HELP!rat owners/experts only please!?

I'm so sorry. Unfortunately, there are a lot of challenges specific to breeding hairless rats, from what I've heard. While rats in general tend to be excellent moms, hairless often don't seem to have much of a maternal instinct & some are unable to nurse their pups.

If the surviving babies have been eating, you should be able to see pale "milk bands" on the upper part of their tummies (it's fine to handle them or turn them over to see the bellies). These can look like crescent moons, spots or blotches. If you can see them, you'll know that mama rat is producing milk & the pups are strong enough to eat.

If you don't see them, try to find small animal milk replacer-- I'm not sure what it's called, but some pet shops & vets will have it. If you can't find it, get KMR or other kitten milk replacer. If that's unavailable, get soy-based infant formula.

Hand-raising baby rats is difficult but I know people who have done it, including someone who has rescues wild rat pups. They'll need to eat every couple of hours & will probably only take 1 or 2 drops for the 1st few feedings (they grow & become stronger very quickly). Use a syringe without a needle, or the smallest medicine dropper you can find. Some people have even used a small twist of cloth. After each feeding, stimulate the pups to go to the bathroom by gently tickling/massaging their lower timmies & under their tails with a soft cloth or tissue.

Good luck. I hope the remaining pups will be ok. Please keep me posted.