How Long Is A Elephant Pregnant. The minimum time for which the elephant can be in the gestation period is for about 18 months. Elephants are also highly intelligent.
Large mammals require a longer period of time to attain any proportion of adult mass compared to small mammals. One of the reasons elephant pregnancies are so long is because elephants are big. If you think that pregnancy this long is because of how large these creatures are, you would be only partially right.