Different ages of dromedary camels representing the simple life cycle of the dromedary. A: 3 months old calf; B: 2.5 years old juvenile (immature male); C: 4.5 years old female (unmated female); D: 12 years old pregnant female (8 months pregnancy); E: 8 years old female with newborn calf and F: 18 years old fertile bull in reproduction season.