You can get a Cyndaquil without trading only by transfering it from a GBA Pokemon Game onto your Pokemon Diamond Version.
The only other way to catch it is to cheat.
All 150 pokemon are in the game so you dont have to trade for them. BUT IT IS EASYER
By trading the other starters with other players of Diamond or Pearl.
It is impossible without trading from Diamond, Pearl, or Platinum, or without the use of a glitch or cheating device.
no you can't you have to either trade or gameshark cheats :P
you cant get it without migrating.
You can get a Cyndaquil without trading only by transfering it from a GBA Pokemon Game onto your Pokemon Diamond Version.
Get Pokemon emerald and then you can get all three without cheats or trading
with trading Charizard Mewtwo Groudon Raquazza Kyorge Zapdos Without trading Rayquazza Groudon Kyorge Vaporeon Gyrados Alakazam
There is no other way.
not without trading someone elses Pokemon that's holding it
You can if you use action replay :P If you don't use one, then it is impossible to complete without trading as there are only certain Pokemon that can be caught in diamond and vice versa with diamond.
The Pokemon that can be caught without special events, trading, or cheating in Pokemon diamond are: Uxie Mesprit Azelf Dialga Giratina Heatran
Latios, groudon, Rayquaza, Regice, regirock, registeel, they are the legendaries you catch int he game without cheating or trading
No it is not possible. You have to hack or trade.
The only other way to catch it is to cheat.