level 16
32
level 36
It evolves at level 36.
22
lvl 21
50
Nidoran evolves on level 65.
You need to trade it so it can evolve into a Golem.
Geodude evolves at level 25 into Graveler in the battle arena.
ekans --lvl.22--> arbok
Growlithe evolves with the help of a Fire Stone