JSnake said:My Cyndaquil got a Bold nature. Is that good, EvilMario?
Ideally speaking, you'll want a Modest (+Special Attack, -Attack), or Timid (+Speed, -Attack) nature for the Cyndaquil. But as long as the nature leaves your Special Attack untouched, it should be fine if you don't feel like saving right in front of the Pokeballs and resetting. The nature effect stats by 10%, which is quite a bit, but not game breaking for In-Game.
http://www.serebii.net/games/natures.shtml