In Pokémon Ruby, you can only catch Treecko by selecting it as your Starter Pokémon if you picked Torchic or Mudkip as your Starter Pokémon then you cannot find it or receive it in the game however you can find someone else locally that would be able to trade you Treecko additionally you could have Treecko from Pokémon Sapphire and you could trade it over to Pokémon Ruby in order for Pokémon Ruby to get Treecko.
Ruby, Sapphire and Emerald.
There are two possible ways: Choose Treeko as a starter Pokemon Or By trading
raikou cannot be caught on Pokemon ruby
No.
You can't catch a sentret in Ruby version, but you can catch one in Emerald version.
at the pokemon lab
You HAVE 2 get national pokedex by seeng all the sinoh Pokemon then put either Saphire,Ruby or Emerald then migrate a treecko from the GBA game and catch it in the Pal park.............but I don't think you can catch treecko anywhere in the game .........Omark......
Torchic, Mudkip, and Treecko.
torchic,treecko and mudkip
from professor elm at the begining
Ruby, Sapphire and Emerald.
No.
Trade it from Ruby,Sapphire,Or Emerald.
It's easier to trade for it
There are two possible ways: Choose Treeko as a starter Pokemon Or By trading
Treecko is a Hoenn region Pokemon. You cannot catch him in Platinum because it is the Sinnoh region. The only way to get the Treecko is if you have the game Pokemon Emerald, Ruby or Sapphire and when you beat Platinum, you go to the Pal Park which is located at the south of Sandgem town and then to the east. When the Pal Park is open, just save the game and turn off your DS. Put your Pokemon Ruby Sapphire or Emerald cartridge into your DS and start your game. When you are at your Game menu, find: "Migrate from [Game Cartidge name]". You need 6 Pokemon to migrate, find your Treecko and enjoy!
trade it over from emerald or ruby and Sapphire