Complex sentence: Male dromedaries have a soft palate, which they inflate to produce a deep pink sack, which is often mistaken for a tongue, called a "doula" in Arabic, hanging out of the sides of their mouths to attract females during the mating season.
Split into simpler sentences: Male dromedaries have a soft palate, called "doula" in Arabic, which they inflate to produce a deep pink sack. The palate is often mistaken as the tongue, as it hangs out of the side of the male's mouth to attract females during the mating season.