It's unoriginal design, and how it's loved by so many more than it should be.
Do you even know what unoriginal means?
A fire breathing dragon whose only distinguishing characteristics from an archetypal cartoon dragon are its orange color and a flame on the tip of its tail? Compared to a giant bipedal turtle with water cannons in its shell and a frogosaur with a giant flower on its back?
It is pretty unoriginal. Not to say its terrible for it. Not everything HAS to be original, nor should it be in some cases.