Allipolestes

Allipolestes have the strongest venom of all dragons, but instead of other dragons it's don't burn your flesh but paralyse or cause a heart attack in lesser than one minute. They can controll the dosage und kill a human (fast) only if they are attack.
They live alone in caves in the mountains of the sahara desert and sleep most of the day. But in the evening they flying over the land, looking for prey like wild camels, snakes or desert foxes.