Camels don't store water in their humps but its hump is useful
The capacity of camels to go for weeks at a time without eating has long been recognized, and this makes them extremely valuable pack animals for people traveling across dry settings. A lot of people think that camels' distinctive humps, which can have one or two humps depending on the species, are used to retain water so that it can be accessed later. But rather than holding water, camels' humps contain fat, which they use as a source of energy when food is in short supply. Healthy camels with large fat reserves may last many weeks without eating or drinking.
Camels often inhabit deserts, which can make it challenging for them to find food. When a camel goes for an extended period without meals, its body may use the fat in the humps as fuel, which is one of the interesting facts about Camels. For every gram of digested fat, this tissue produces more than one gram of water during metabolism. If the camel has gone a very long time without eating, the humps may deflate and droop, but they will sit upright again once the camel can refuel.
Additionally, the camel's humps also aid the animal in controlling its body temperature and it performs the function of keeping a camel cooler in the desert heat, which is crucial in the desert where daytime temperatures may soar to dangerously high levels and drop precipitously at night. Camels can reduce heat insulation throughout the rest of their body throughout the day when temperatures are high, and their body temperature increases, by concentrating fatty tissue in humps on their backs rather than all over their body. So that their body temperature is not too low as it gets cooler at night, the surplus heat is then dissipated via the remainder of the camel's body. Besides, as oxygen is needed for the metabolic process, this fat metabolization releases energy while also causing water to drain from the lungs during breathing. As a result, there is a net reduction in water. They even have a unique way to regulate brain temperature! Animals need to keep the brain temperature within particular ranges, and camels have a rete mirabile, a network of arteries and veins that are closely spaced and use countercurrent blood flow to cool blood going to the brain.