I think you're referring to the Pokemon seel. If you are, than you have to level it up to level 30 before it will evolve...
Level 34.
Lv 34
at level 34 seel shoud evolve into dewgong
It evolves into Dewgong. It does so by leveling up to level 34.
Level 34 yo it evolves into sewong yeah I caught it can u belive it mans
It is suppose to evolve at the Level of 20,but if you want it to evolve later it can evolve anything after it is at Level 20.
It will evolve by level. Teddiursa will evolve into a Ursaring at level 30.
It will evolve at level 36.
it evolve on level on 64
They evolve on level 40
They evolve at level 36
Kricketune does not evolve, but a Kricketot will evolve into Kricketune at level 13.
Pikachu do not evolve by level. They evolve when a thunderstone is used on them.