QuickCheck: Do camels store water in their humps?

There are actually two surviving species of camels, the dromedary camel (shown here), and the Bactrian camel. The way to tell them apart is that dromedary camels have one hump, whereas Bactrian camels have two.

WHEN you think of camels, you think of hot and dry deserts, with no water in sight.

But is it true that camels store water in their humps?