>>27886597"Dragon" is hugely broad, anything vaguely reptilian or amphibian could be interpreted as a dragon. Some fish even.
Don't think about dragons as mythological beings, think of them as animals that evolved dragon-like features due to their environment. Flygon, for example, is a "dragon" in name only because it's based on a dragonfly. There's no reason that a desert bug should turn into a classical medieval European dragon with sunglasses. But it works.
Kingdra and Dragalge, what part of seahorse screams dragon? What about Goodra, what person looks at a slug and thinks dragon? Mega Ampharos? It's fucking Pokemon, you can use anything as an inspiration. A turtle dragon is pretty standard.
Shit like Arbok, Heliolisk, Milotic, Altaria, fucking Scrafty, Seviper, and Gyarados are all in the dragon egg group. There's fish, snakes, birds, lizards, amphibians.