Common in domestication

Dromedary Camels were domesticated 4000 B.C. for travel, meat, milk and running, and became extinct in the wild around 2000 years ago. They live 40 years. Dromedaries have no known predators. They feed on leaves, grasses and shrubs in deserts and steppes. Being thirsty, dromedaries can drink up to 100 litres of water in 10 minutes, what would be lethal to any other animal.