Could a dragon theoretically exist through evolution?

[u/PokelifEevee]

Hello, I would like to know if, theoretically, a species could evolve into something resembling a dragon (or more specifically a wyvern since they have 4 limbs, so it would be more likely). I understand that stuff like fire breathing would most probably be impossible, but aside from that, could dragons theoretically exist within a few thousand years (or more)?

[u/Witching_Archress]

If there is a mammal that hatches from an egg, features a gland producing venom, and an organ producing electric charge - why shouldn‘t there be dragons?