Bat

A bat or vampire bat is a pre-War creature that lived in Appalachia.

Background
Bats that lived before the war utilized echolocation on a limited scale. After the war, Chiroptera species of bats were exposed to biochemical tests conducted in the Enclave bunker, mutating into creatures known as scorchbeasts. Ella Ames makes the hypothesis that these creatures evolved from pygmy bats and may have carried forward pre-War variant sonar and echolocation traits.

Former Cutthroats member Carol Sweeney writes about these evolved creatures in their journal, stating that on their way to scavenge in Big Bend Tunnel East, they saw giant bats flying out the ground. Claire Hudson also comments on "huge mutated bats that poison the ground."

Appearances
Bats are mentioned in Fallout 76.