So, in my previous question, the two most popular weapons for a dragon were wings and the tail.
The core concept is that my slightly-larger-than-a-draft-horse dragon, who still only weighs a mere 500 kilograms, uses his tail as a whip. Dragon tails are long, but usually sleek and laterally compressed, sometimes dragons use them as rudders.
As you can see in this video, this model tail has enough power to it to shatter a jawbone.
However, this isn't enough, you can never overkill, when it comes to natural weapons (as long as the animal doesn't uses it on their kin).
Dragon bones are similar in composition to limpet teeth at the molecular level, granting them significantly more strength, albeit for only one direction. They're analogous to carbon fiber and other short-fiber composites.
Since between each other, dragons either wrestle like water monitors or compete on who can stay in the air longer, the most likely targets will be armored
skeptics knights. The knights are almost always dismounted as dragons can startle trained horses from a distance.
Given these, how can the dragon's tail whip be even more deadly against armored, human enemies?