You dont :) you gotta trade it if you didnt choose it as your starter
You cant catch a squirtle in Pokemon firered nor in Pokemon leafgreen. Squirtle is a starter Pokemon so you cant find or catch one unless you use a game shark.EDIT by Man spider27: Although it is- as far as I know- impossible to capture Squirtle or Bulbasaur in Pokemon leafgreen it is possible to find Charmander in the Old Mansion on Cinnabar island. Hope I helped!
you can't, you need to trade with a game that you can start with a squirtle (ie. Pokemon leafgreen, Pokemon firered)
You can't catch it! You need to trade who has Pokemon firered or leafgreen.
They are not catchable on any Pokemon game,however you can trade to get the starter Pokemon squirtle and charmander on Pokemon Leafgreen/Firered.
If you have the starter Squirtle, you will find Rakio in the wild after beating the Pokemon League.
in squirtle land
you can't CATCH squirtle in leaf green. but it can be chosen as starter Pokemon at the beginning of the game.
you put Pokemon Leafgreen in your Nintendo slot and when you are signing into the game it says migrate from leafgreen and in leafgreen one of the starter Pokemon is a squirtle then you go to pal park to catch it in the catching show. (it has to be in ur PC before you can transfer it)
Get it for your starter Pokemon
Squirtle can be acquired by trading for one from a Firered/Leafgreen.
If you didn't choose squirtle as your starter Pokemon you need another firered or leafgreen to trade one to you.
They are bulbasaur, charmander, and squirtle.