Have you ever seen a camel in a zoo? Which kind did you see? One kind of camel is called an Arabrian, or Dromedary, which has one hump. This hump can store up to 80 pounds of fat, which can be broken down into water and energy when needed. As a result, camels can travel up to 100 miles through the desert without water.
The other type - a two-hump camel - is called a Bactrian camel. The Dromedary is taller and faster than the Bactrian, but the bactrian is the stronger of the two. It can carry a much heavier load. Both camels can go several days without eating or drinking. They can store food in their humps. Camels used to be very important in some desert countries as people used them for transportation and food. In fact, they are nicknamed "The Ship of the Desert". But today most people in these countries cross the desert in trucks and eat from from cans. Few animals serve as useful to mankind as the camel does; an animal which has long been associated with the Arab world.
We can infer the Bactrian camel is more popular because it has two humps on its back.