im pretty shure its at lvl 18. i would know because i played the rom.
Totidile evolves at the exact same level as it does in heart gold. Level 16, And Evolves Into The Water Type Pokemon, Crawknaw. Then later evolves into Feraligatr At Level 36.
you cant its a starter Pokemon
Level 37.
Level 30.
level 28
Level 30.
Level 18.
Level 26
Level 25
at level 40 it should evolve into drapion
Cyndaquil totidile and chorkira
you have to evolve it with a water stone