The most important part of the camel is its hump. When that hump is empty, it loses its firm shape and flops to one side. The purpose of the hump is to serve as a storage place for food. The camel can also take its own water supply along.
The camel has three stomachs. It uses the first one to store food while it is grazing and to form it into cud. In the second stomach are the digestive juices and in the third the chewed cud is digested.