Square Feet. The square foot is a unit of area used in the imperial and U.S. customary measurement systems. A square measurement is the two-dimensional derivative of a linear measure, so a square foot is defined as the area of a square with sides 1 ft in length.
16 Months of Patience. The white rhino is one of the largest of all rhino species, so it's not surprising that her large stature would lead to a long gestation period of 15 to 16 months. After the gestation period, the mother gives birth to a single calf weighing around 143 pounds.
The elephant's gestation period is 22 months, the longest of any land animal. The gestation period for an African elephant averages 640 days; for the Asian elephant it is 645 â¦ days. The mother gives birth to a calf that weighs up to 115 kg and stands over 75 cm tall.For more details, please see sites listed below.he elephant has a gestation period of about 22 months, the longest of any animal. Gestation period (lenghth of pregnancy) for elephants is 22 months. (to be correct, they do not stay in their mothers stomachs, that would mean the mother had eaten them!