EVERYDAY SCIENCE

Detailed explanation-1: -Generally, the larger a placental mammal is, the longer its gestation period. For example, domestic cats have a gestation period of about two months, humans about nine months, and elephants almost two years.

Detailed explanation-2: -Elephants are the largest land mammals in the world, so it’s perhaps not surprising that they have the longest pregnancy of any living mammal: African elephants are pregnant for an average of 22 months, whilst for Asian elephants it’s 18 to 22 months.

Detailed explanation-3: -The placental mammals include such diverse forms as whales, elephants, shrews, and armadillos. They are also some of the most familiar organisms to us, including pets such as dogs and cats, as well as many farm and work animals, such as sheep, cattle, and horses. And humans, of course, are also placental mammals.

Detailed explanation-4: -Elephants are the largest land mammals, and they also have the biggest brains. It takes time for an elephant baby, which weighs approximately 230 pounds when born, to develop. How long? The average gestation period for an elephant is about 640-660 days or approximately 95 weeks or roughly 23 months.