I'm pretty sure that all animals had to evolve at some point. Earth keeps changing, and so do organisms. If an animal didn't change physically perhaps it mentally changed by finding a different migration pattern or developing different methods to catch fish.
Plants evolved before animals.
No, it never evolves. Nintendo might make it evolve if they make a new game, other then that, it will never evolve.
No...... Ditto can never evolve.
tropius will never evolve because tropius is a Pokemon that does not evolve
level 101 (never)
Blastoise will never evolve into a Dragonite.
They don't.
never.
Never.
Never.
Farfetche'd is not known to evolve and most likely never will evolve
never You must mean Aerodactyl. In any case, the answer is still never, because it does not evolve.