Viridian forest cry?

Question

on Pokemon fire red, I hear a caterpie, weedle, or kakuna cry sometimes in the music at viridian forest. is this normal?

Answer 1

Yes, that is completely normal.

>In Ruby, Sapphire, Emerald, FireRed, and LeafGreen, cries of the Pokémon found in the player's current location can occasionally be heard while walking in the overworld. In Pokémon Emerald, these cries are heard more often if the first Pokémon in the player's party has the Ability Swarm. - Bulbapedia