[Answer] What is the gestation period of a common hippopotamus?

Step 1 : Introduction to the question "What is the gestation period of a common hippopotamus?"

...There are two hippopotamus species roaming the Earth today. The common hippopotamus usually bears young once every two years. As the time grows near for her to deliver, the mother hippo freuquently separates herself from her herd for a couple of weeks. After a gestation period lasting eight months, momma hippo usually gives birth in shallow underwater environments, although it isn't uncommon for the hippo to give birth on land. Source: Animals.Mom.me

[Answer] 6. Where do the most numerous hippopotamus populations reside?

Step 1 : Introduction to the question "6. Where do the most numerous hippopotamus populations reside?"

...1. Italy 2. Disney's Animal Kingdom 3. Morocco 4. East Africa In 1996 the hippo population was said to be large enough to be secure. However, in the last 10 years their numbers were found to have decreased by up to 20%. They are hunted illegally for both meat and ivory.