In a discussion of dragonfruit (common in China), a Chinese friend pointed out that Chinese dragons and Western dragons are quite different. I was surprised, I hadn’t noticed this. My friend was right:
There are two distinct cultural traditions of dragons: the European dragon, derived from European folk traditions and ultimately related to Greek and Middle Eastern mythologies, and the Chinese dragon, with counterparts in Japan, Korea and other East Asian countries.
says Wikipedia. Why two different imaginary animals would be quite similar isn’t obvious.