Where would you expect to find the world's largest herd of camels? The Sahara? Nope - it's in Australia.
(Seemingly there are around 750,000 camels roaming wild in the outback, (between 2001 and 2008 it was estimated there were up to a million), but they are not indiginous. Imported to Australia in the 19th century from Arabia, India and Afghanistan, for transport and heavy work in the outback, they now cause a lot of problems and are probably public enemy number 2, after the fecund rabbit.