trade trade
You can only get another starter by trading with another game in the same generation.
trade
I'm pretty sure that the only way to get another starter Pokemon in Pokemon diamond is to go to the Global Trade Station (GTS) and trade with someone.
Trade with another Pearl or Diamond.
The starter pokemon for Diamond and Pearl are Turtwig, Piplup, and Chimchar.
Just do one of these: 1. Trade on the GTS 2. Ask your friend to breed theirs, and give you the egg 3. Trade over your starter, restart the game and select another starter,trade the old starter back, and repeat.
Cyndaquil is the Fire type starter Pokemon from the second generation. It does not occur in the wild or as a reward in Pokemon Diamond, and must be traded over from another game.
You have to trade it from another Pokemon Pearl, Diamond or Platinum game, or use cheats.
piplup
you can get it as your starter Pokemon
Choose it as your Starter Pokemon.
You have to choose it as a starter