This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Firedrake (Germanic)
Fire-Drakes are the Dragons of Norse mythology. The creature was send was to be the one who killed the Hero Beowulf. Some say they are smaller then regular dragons and more reptilian but most reports of them being like traditional dragons. The Fire Drake looks like a giant komodo dragon made of lava and being fifty paces long, the dragon was serpentine in nature and fearsome in presentation. The Fire-Drake was a fearsome dragon that lived in a cave guarding a large horde. Someone crept into the dragon's lair and stole a cup. The dragon awoke and found that his treasure was indeed missing a cup, so it searched for it.
It discovered human foot steps, which allowed the dragon to learn who stole the cup: humans. With that, the fire-drake took to the skies and began tormenting a nearby town. Beowulf, the King, was informed of this creature's wrath, and was asked to slay the beast. went to the dragon's lair, and Beowulf began to fight the mighty monster. Being bitten by a venomous dragon, Beowulf did not die right away, but lived to see the dragon slain with the help of Wiglaf, his relative. However, he died later because of the poison.