Hi this is Ashlee from Pet Planet in Riverton, Utah. I am here to tell you how to mate gerbils. One thing you want to make sure is that you have the opposite sex. If you don't know you can go to your local pet store and they can possibly find the sex for you as well as when they do mate you want to remove the male as soon as possible as soon as you know that the female is pregnant. You do not want to handle the babies or disturb the mother as much as possible until she is ready. One thing is that you want to make sure that there is low enough, your water bottle is low enough to the ground once she does have babies that the babies can actually start to drink out of the water, that's one of the most important parts of how you are going to know that they are slowly weaning off their mom. Make sure the food dish is low enough to where they can actually climb in and eat some food. One of the most important things and I will stress this is you do not want to handle those babies when the mom is feeding them. She will reject them. Also you want to make sure that they are at least maybe a month before you take them out of the cage. If you have any questions you can always contact us at firstname.lastname@example.org. I will be happy to answer any of your questions.