Dromedary camels originated in Northern African and the Middle East. They have also been introduced to Australia. Dromedaries have been used as pack animals for thousands of years. They have one hump. Contrary to popular belief, a camel’s hump is not used to store water, but rather fat that is used by the camel when food in scarce. Dromedaries have cushioned feet that distribute their weight over the ground. They have two toes on each foot. They can also close their nostrils when needed to prevent breathing in sand. A dromedary camel can drink more than 13 gallons (50 liters) of water at one time.