You can't.
if you have firered or leafgreenyou will be able to catch entei ,raikou, suicune only if you beat the elite four then when you catch the three lengendaries then migrate then into Pokemon diamond
You have to trade or migrate. You can't catch them in diamond.
You can catch Mewtwo, Suicune, Entei, Raiku, Ho-Oh, and Lugia.
H0-OH , Lugia , suicune , entei , raiku . . . i think
you have to beat elite 4 then catch all unowns.
depending on the pokemon you picked,, if you pick charmander, suicine will appear. if bulbasaur, entei will appear. if squirtle, raiku will appear
All of the legendary dogs: Rakou the god of speed Entei the god of power suicune the god of recovery are all Johto Pokemon not hoenn.
Entei does not stay in one place, when you go to the burned tower you will see all 3 Legendary dog pokemon, when you go down to where they all scatter. Then you look on your pokegear map and you will see Entei and Raiku on there. then you try to catch them. Suicune, you can only catch him when you beat the Elite 4
look around for Suicune/Entei/Raiku
unfortunately you can't catch all 3 however depending on the starter you chose lets say its bulbasaur then you will find entei, if you chose squirtle you get raikou, and charmander gets you suicune. i don't know about gold and silver but in crystal you catch suicune in a standard battle at the tin tower ant raiku and entei will be in the wild but will always run from you
you have to start with Bulbasaur.then beat the elite 4.after that Raiku will become then you have to look for it
You just need one of them.