First entry to my dragon challenge: http://drangir.tumblr.com/post/132305683896/new-dragon-challenge

Pre-dreadnought is a very unusual warship class, from a time where wood built sailing ships were being replaced by steam powered, armored ships of iron, find more info on wiki: https://en.wikipedia.org/wiki/Pre-dreadnought_battleship

The pre-dreadnought dragon is an uncommon breed, one of the most massive types. With a body length from 80 to an impressive 140 meters, including a short tail tiped with a spiked mace, able to crush a vehicle, damage a hull of a ship, or even take down a medium dragon with a single, accurate hit. His most powerful weapon is his firebreath, fueled with thick venom that was high energy and burned in open air. It also stuck to anything it touched, which made this type widely used during sieges.

Because of the mass, thick armored hide, and lack of supporting fins these dragons aren’t great flyers. Older individuals of pre-dreadnoughts also usually suffer from the venom glands diseases (which are very complex organs), as well as problems with joints and postural defects caused by the weight of body.