There is a possibility that the four week old babies would be interested in the new born pups but , ultimately the mother gerbil will protect the babies and keep them occupied. Also the pups usually sleep and maintain in a corner of a cage or tank.
My hamsters baby's were nearly 4 weeks old when we found she had given birth to more babies and they seemed to protect them with mum
Give it about one week
My doctor said about one ounce a day.
Alien babies can't have babies but adults can, to make it an adult put the baby in water for about an hour every day/week. But yes they do.
the babies will stay for only a week.
A healthy four week old baby should be noticeably larger than a newborn with less wrinkles than a new born and a clearer complection.
At week 30, your baby is about 15 1/2 inches long and weighs around three pounds. The folds and wrinkles are developing in your baby's brain this week! Red-blood-cells are under complete control of your baby's bone marrow by week 30. Your baby's eyes are now open when he is awake!
yes but not advisable as this is the colustum babies need
It squeaks because it wants milk or that it is hurt.
Yes because only five months into pregnancy can seriously damage the babies health and nerve system. You should take her to a doctor immediately.
One can learn more about baby proofing from the magazine "Parents". It is a magazine dedicated to identifying and preventing dangers that befall babies from week 1 to week 52.
Sometimes, but not always. Let your doctor know that you were and he/she will know what to do.