The Vampire Bat is a passive mob found randomly in the world!
The Vampire Bat inflicts very light damage when it flies close to a player. It will not actively seek combat, and will not retaliate when attacked. On death, it has a small chance to turn into a Vampire, a considerably more threatening mob.
The Vampire Bat heals itself for a small amount of health when attacking any player or mob too close to it. It is immune to lightning damage and resistant to poison. However it is very weak against explosions, potions, lava, fire, and projectiles.