Vampire need to suck,or drink blood to survived. If a vampire doesn't suck blood for a long time ,there powers would weaken. If the vampire keeps from refraining blood,they will eventually fall ill,and died.Vampires can be made by two ways ,one the natural way born. Two the unnatural way turned,by a vampires venom.
Vampires have a range of ability,and powers. Super strength,super speed,super flexible,can survived harsh conditions.They can also heal fast,and more durable than humans. Special powers each vampire have a special power,the special power won't developed until there older,or in turn ones case after four years.