What is the camel hump made of?

Contrary to popular belief, camels store fat in their hump, not water. They store water in their stomachs. There are three species: one-humped Dromedary (Camelus dromedarius) and the Bactrian two-humped camel (Camelus bactrianus). and the two-humped wild Bactrian camel (Camelus ferus) of Mongolia.