Hello, If your sick and Tired of Going to the Pet store. What you can do to save Money, and Time, is Buy a Male and Female Adult Mouse. Put them in the Same cage, or Whatever for inclouser. Let them Mate, if you have an older brother, like I do, the Mice go to his Snake. If Not, well you can keep them as pets, but... it's up to you. The Female Mouse should give birth between 16-24 days after conception, [Start of Pregnacy.] You can feed the Pinkies alive, or freeze them.