[Biological function of morphologic peculiarities of the dromedary].

The dromedary is very well adapted to arid areas. It is able to survive for many days without drinking; the loss of water is negligible. Morphological characteristics hitherto interpreted as adaptations to dry areas now seem to have other reasons. In the natural habitat of the dromedary mostly thorny plants occur. Long eyelashes, eyebrows, lockable nostrils, caudal orifice of the prepuce and a relatively small vulva protect the animals against injury, especially during feeding.