Giant albino bat

From Tardis Wiki, the free Doctor Who reference

Giant albino bats were a species native to Tiermann's World.

They were much larger than Earth bats, with each being roughly the size of a toddler. Being albino they had yellowish hides and red eyes, as well as long claws and leathery wings. Giant albino bats were vicious hunters, who hunted in packs.

A large group of giant albino bats lived in the Lost Caverns, deep below the forests of Tiermann’s world. Red eyes, leathery wings and yellowish hides. (PROSE: Sick Building)