If you need to fill the dex, be sure to level up Pokemon that will help complete the dex so they'll evolve. Trade with other versions, such Pokemon Ruby (best choice, it has all the Pokemon you can't catch) or emerald. For the really hard to catch Pokemon, stick to it. They'll come eventually. Same for ledgendaries.
catch it
Catch 'em all
YES!!!!!!!! all you have to do is see all the Pokemon and catch the ones you can catch in the game!!!
No to get Cyndaquil you must catch all Pokemon from that region, because if you have to catch every single Pokemon, won't you already have Cyndaquil?
if you don't have that Pokemon just catch it and evolve it
Regi Trio Latias Kyogre Rayquaza
CATCH THEM AND TRADE FROM SAPPHIRE
You catch and evolve all of the Pokemon you catch :P
to get stars achieve the following: beat the elite 4, catch all the hoenn pokemon, catch all the johto pokemon, catch all the kanto pokemon.
You can not catch any of them in black or white, but I think that you can catch all 3 in diamond.
Yes, I do want to catch all Pokémon.
yes you can catch every Pokemon ever made