It is interesting that drawings of Chinese dragons always have something like feathers, while European dragons do not. Dragons may have at least partly been inspired by dinosaur fossils.

The feathered dinosaur fossils have first been discovered in Liaoning, China (and apparently many others in Asia): https://en.wikipedia.org/wiki/Feathered_dinosaur#Fossil_disc...

Maybe evolution made some differences.

(disclaimer: I do not know the actual scientific literature)