Here's why:
* Game-exclusive Pokemon: Many Pokemon games have exclusive Pokemon that can only be found in one version or the other. This helps to encourage trading between players who have different versions of the game.
* Girafarig in Ruby: Girafarig can be found in the Safari Zone in Pokemon Ruby.
To get a Girafarig, you'll need to either:
* Trade with someone who has Pokemon Ruby: Find someone with a Pokemon Ruby game and ask them to trade you a Girafarig.
* Use a Pokemon Bank transfer (if available): If you have access to Pokemon Bank (an online service for storing Pokemon), you might be able to transfer a Girafarig from a compatible game.