What is lindworm dragons diet?

" Bactrian camels are hnted all across the Asian steppes, often by lindworms working in pairs. There have been a number of reports of wild horses also being taken, though thi is unlikely since the lindworm primarily hunts camels, presumably for the water that is said to be stored in their humps - a horse would be considered exceedingly dry by comparison. Snakes are also a favoured 'snack' between meals." - Ernest Drake, 'Dragonology, Field Guide to Dragons'