You can only obtain squirtle as your starter pokemon( your first pokemon) or through trade.
Squirtle is only obtainable if you chose it at the beginning of the game you must get one from another firered or leafgreen then give it to your firered and then you can finish your pokedex.
you must obtain it as your starter Pokemon or ask a friend to trade you
Charmander, Squirtle, Bulbasaur. You are always given them, you don't find them!
firered and leafgreen version
If you picked Squirtle as starter, you can evolve your Squirtle into Wartortle. Otherwise you'll have to trade with someone who picked Squirtle as starter.
you have to get squirtle as your starter
Squirtle is only obtainable if you chose it at the beginning of the game you must get one from another firered or leafgreen then give it to your firered and then you can finish your pokedex.
you get it at the beginning. don't choose charmander or squirtle.
there is not 1 certain route and you have to of chose squirtle to get entei
You can't, Squirtle can be obtained by Migrating it from LeafGreen or FireRed.
you must obtain it as your starter Pokemon or ask a friend to trade you
Charmander, Squirtle, Bulbasaur. You are always given them, you don't find them!
You get Squirtle as one of the starter pokemon.
Squirtle can be acquired by trading for one from a Firered/Leafgreen.
Chose Squirtle as your starter, get the national dex, then you will find it in random grass.
You can't.
You get Squirtle in the beginning of the game when you are choosing one of the 3 starters. You could also trade for it or you have chose Charmander, while leaving the rival with Squirtle. There's no way to find Squirtle in the wild, besides Game Shark.