Firedrake

A Firedrake is a small flying lizard, of which several were kept by the Circus Arcanus.

Description
Small flying lizards with long antennae, Firedrakes are sometimes mistaken for dragons, though they do not breathe fire. Instead they emit sparks from the ends of their tails, which can be used to set anything flammable alight.

Appearances
Several of these creatures were kept in a cage, which Credence Barebone struck when angry early in 1927.

Behind The Scenes

 * These creatures were first seen in passing in the Teaser Trailer, but only given details in late 2018, shortly prior to the film's release.
 * It also seems that these creatures may be kept as pets, though this is uncertain and unverified.