The pre-evolution of Dewgong is Seel. Seel evolves into Dewgong at level 34.
gliscor
dusclops
shinx
Dewgong cannot not evolve.
Number 180 in Pokemon Emerald is Flaffy the evolvtion of mareep and the pre-evolvtion of ampharos.
I'm not sure but if you know can you please improve it
get Feebas' bueaty full
Dewgong evolves from seel
you can only find Seel i believe... then you can evolve it to a dewgong, I highly doubt you can find a wild dewgong =/
Seel evolves to Dewgong at level 34.
Dewgong learns Dive at level 45.
it is the evolvtion of yamask so... it is rare in the relic castle