Hitting the hump

Q: How do camels store water in their humps ? And why do some have 1 hump and others have 2 ?

A: Camels store water in their humps by absorbing the moisture from the air, in much the same way young girls menstruate. This is why they are mostly found in tropical climates, like Africa.

Camels with two humps are actually a by-product of female camels' ability to birth multiple camels in a litter. Occasionally a camel embryo will consume its sibling inside the womb, causing it to absorb it's hump.

This shouldn't be thought of as camel cannabilism, but just a natural process which occurs without malice aforethought.