Croagunk(poison type) evolve at 37 into, the sneaky, Toxicroak.
Croagunk will attempt to evolve starting at Level 37.
Level 37
croagunk evovles at level 38 or 37
Croconaw evolves at level 38, not by a stone.
Croagunk will evolve into Toxicroak at level 37.
That's easy, croagunk evolves at level 37-38.
lvl 34
It evolves at level 37.
croagunk evolves at level 37
Croagunk evolves into Toxicroak at level 37.
Rephrase your question = What level does snorlax evolve on Pokemon diamond? =
Croagunk evolves into Toxicroak at level 37