Vampires have sharp teeth that they use to bite and feed on the blood of their living prey, which can also turn victims into vampires. In ancient times, people believed garlic protected against vampires and would wear garlic necklaces at night. Vampires can transform into bats at night to fly and hunt prey, feeding only on the blood of victims they kill. Vampires cannot look at lamps and are nocturnal since light can destroy them. Some vampire families never sleep due to their powerful bloodline.