The dragon is the largest known flying
creature. To maintain his enormous bulk in the air, his physical structure
has had to be different from that of other reptiles whom many persons inaccurately
associate dragon with these.
His wing bones fit on to broad shoulders which support the powerful wing muscles; these require an extraordinary articulator system unknown in other species. The bones were tougher than reinforced concrete and much lighter.
It is important to note that the bones of a dragon are hollow like bird reducing their mass, scientifically: any creature with the physiology of a dragon can flight well and at great speed.
THE MUSCULAR SYSTEM
The dragons muscular system is one
of the most fascinating... and one of the most complicate. We can evaluate
the power in the bite of a dragon to put to an average of 2 ton per cm
cube (in comparison it could easily gnaw steel).
As a matter of fact, dragons are very powerful. Their leg and "arm" can support great charge without much difficulty but this only applies on ground movement because in the air, a dragon could not maintain more than half of is weight for a long period of time.
If you have vision keen you probably notice something at the looking of the muscular picture and the skeleton picture... with the observation of the front and the rear paws, I come to the conclusion that dragons COULD NOT run, their muscles of the leg and arm were not developed for this matter. This doesn't means they could not walk, this only means that they could not reach great speed at ground. (Take in consideration that dragons come in so much variety that it could be possible for a dragon to run).
The dragon's body is completely covered
with tough, shiny scales. Dragon usually doesn't have this scaly armour
on the neck or stomach, possibly due to his habit of burrowing underground,
not all draconologist are agreed about this. To protect his "soft" abdomen
(at least weaker than the rest of his body) the dragon often wears jewelled
breastplate. Using his saliva, which has powerful adhesive properties,
and which he secretes on an empty stomach, the dragon often sticks precious
stones on his neck and stomach, for protection as well as adornment.
The scales are pentagonal, and shaped like a teardrop, with two long sides and two shorter ones, and a very short fifth side attached to the skin. The dragon can make them stand on end whenever he likes to preen them. Remember, the dragon is a very clean creature and takes great care always to keep his skin and scales clean and immaculate.
In their normal position, the scales
overlap very neatly and, thanks to a tiny cavity in the surface, they fit
into each other to allow perfect freedom of movement.
If we study a scale closely, we observe the following characteristics: the innermost part is composed of a compact hairy formation firmly rooted in the epidermis. On the hair follicle there are some tiny glands which secrete a substance that adheres firmly to the skin.
This substance is rich in minerals, which determine the hardness and the colour of the dragon's scales. The external surface has a horny, translucent texture, which gives the scales their habitual lustre.
The dragon does not need to sloughs off his skin like most other reptiles, as the scales grow, they are renewed automatically, like human nails and hair. They are not shed from the body, except in case of illness.
It is impossible to list the enormous variety of hues that make up the dragon's brilliant colouring, but they can be divided into three broad colour groupings:
Blues, ranging from dark blue to silver and mother-of-pearl.
Red, ranging from copper-red to dark red and reddish-black.
Greens, which include every imaginable shade of green and yellow and even dark brown, emerald green and burnished gold.
Although these three principal colour
groups are not usually mixed, a dragon's colouring is rarely uniform. In
general, his scales are several hues from one of the main colour categories,
with a metallic lustre which is hard to define. When the scales have a
pale, opaque appearance, it is a sure sign of ill health.
Many dragons are known by their scales, such as Ancalagon the Black, Smaug the Golden and Spars the Green.