The bactrian camel is better known as being the type of camel with two humps. There are only two surviving species of camel remaining, the single humped camels from the Middle East and the bactrian (double humped) camel from Northern Asia. The bactrian camels humps work in the same way to the Arabian camels humps, with the bactrian camels humps used for storing fat which can be converted to water and energy when the bactrian camel is unable to find food and water. The bactrian camels humps give the bactrian camels their legendary ability to endure long periods of travel without water, even in harsh desert conditions. As the fat in the bactrian camels humps gets used up, the bactrian camels humps become floppy and flabby.