Bat

A bat is a flying ambient passive mob that spawns in dark areas underground.

Spawning
Bats can spawn in groups of 2 in the Overworld at a light level of 3 or less on opaque blocks below layer 63, they also need at least 2 air blocks. On Superflat worlds, bats spawn below the top non-air layer, ignoring the usual layer-63 limitation.

Drops
Bats do not drop any items or experience upon death.

Behavior
Bats are small, less than a block tall and wide. They squeak randomly. They often fly around aimlessly, tending to favor the east, and sometimes fly into lava and catch on fire.

Bats also hang upside down on the underside of a solid block when idle, though they cannot hang on transparent or non-solid blocks. If a player approaches a bat hanging upside down, including if the player is invisible, it flies away. This also happens if the player breaks the block the bat is hanging from.

Although the bat is a passive mob, they still despawn when going too far away, similarly to ocelots and squid.

Bats' collision boxes do not interact with the player or redstone components.

Trivia

 * According to Jeb, the bat is an example of an ambient mob – a mob that constantly spawns, similar to the squid, but also constantly despawns because when a player is not around it does not serve any purpose.
 * It is impossible to attach a lead to a bat.

History

 * Bats were added in Xbox 360 TU19, Xbox One CU7, PlayStation 3 1.12, WiiU Patch 1, and Nintendo Switch 1.0.1.
 * The texture of bats were changed in PlayStation 4 edition 1.90 as part of the Texture Update.