Question

Which region is called an open-air zoo? Why?

Answer 1

Savannah or Tropical sub-humid type of region is often referred to as an open-air zoo.
The savannah has vast grassy plains with tall, coarse grasses. Many herbivorous animals such as giraffes, elephants, and zebras, and carnivorous animals such as lions, cheetahs, and leopards are found here in large numbers and, therefore, this region is referred to as an open-air zoo.