Do I have to wait to travel after a tummy tuck? Dr. Eric Chang, Columbia University College of Physicians and Surgeons Answered Jan. 26, 2012 19 years experience in Surgery - Plastics
On the third day, the ears unfold with the ear canal opening on the tenth day. Eyes open on the fifteenth day, and the young are weaned between day 25 and 35. Deer mice can reproduce when they are 35 days old, but they usually breed for the first time at 49 days. 1  Key Reproductive Features. 2  iteroparous. 3  year-round breeding. 4  gonochoric/gonochoristic/dioecious (sexes separate) 5  sexual. 6  fertilization. 7  viviparous. 8  post-partum estrous.
A short gestation period increases fertility in that more litters can be produced in the same amout of time. Thus, mice have evolved very short gestation periods. Although a mouse's gestation period is only about 20 days, there are some mammals, such as certain opossums, whose gestation periods are even shorter.3 people found this useful.lthough a mouse's gestation period is only about 20 days, there are some mammals, such as certain opossums, whose gestation periods are even shorter.