Is it safe to separate 3-week-old mouse babies from their mom?

They look to be 3-4 weeks old. At about 4 weeks old, all hamster babies should be split from the mother into two cages—one for males and one for females. If you keep them all together they will start to breed as they become sexually mature at only 4-6 weeks of age. It is very bad for them to breed each other as they are related.

Thank you for using Petco Pet Education Center, formerly Petcoach! You are correct in planning for the arrival of the pups. I recommend separating the male as soon as you are sure that the female is pregnant, because females can get pregnant again very shortly after giving birth. It is important to keep the pups quiet and calm, to prevent the mother from eating them when stressed. You should also not touch the pups until they are about 14 days old. There are several types of nesting material available in pet stores, or you could use pieces of paperCut up into small strips. The pups should be separated from their mother when they are about 14 to 21 days old. At this point they should be able to eat normal adult mouse food. I hope this helps and I’m happy to answer any additional questions you may have!

Ideally, you should wait at least two weeks before disturbing the nest. If you must move it, scoop it and the pups up in one piece and relocate them to the larger cage. Be sure to transfer some of the cleaner used bedding as well.

Mice are prolific breeders. Gestation is about 3 weeks and they can reproduce throughout the year having 5-10 litters each year. Separating males from females is necessary to stop breeding. Females can breed at 3 weeks of age, so it is important to separate them prior to this age.

Great question! You can send them to their new homes around four weeks of age. When they reach this age, the male and female pups should be separated and kept in different cages until they go to their new homes. I hope this helps!

Cocoa does look pregnant. Gestation is about 3 weeks. She built her nest where she feels most comfortable and secure. This is no cause for concern. Try not to disturb it and when the pups (baby mice) come, do not disturb the nest for the first two weeks. You'll need to keep Ghost separate, because Cocoa can mate again within days of delivery. The pups will wean around 3-4 weeks and should be separated into male and female groups shortly after. They can breed as early as 6 weeks of age.

Hamsters can be weaned from mom around 3-4 weeks of age. This may be a good idea if they are overgrooming or "bothering" her. The hair loss may also be due to stress. You should also separate male and female pups (hamster babies ) from one another since hamsters can breed as early as 3 weeks of age. If the hair loss persists or if the hair does not grow back, have the mother examined by your veterinarian.