no. you just find them all seperatly.
Capture Entei/Raikou/Suicune.
Moltres, Zapdos, Articuno, Raikou/Suicune/Entei.
You can get Moltres, Articuno, Zapdos, Mewtwo, Entei/Raikou/Suicune (depends on your starter pokemon).
Articuno, Moltres, Zapdos, Mewtwo, Suicune, Raikou, and Entei. C Dawg
entei, suicune, and raikou those are the only one's i know of besides houndoom and houndour.
Entei, Suicune, and Raikou are not available in Pokemon Emerald, Ruby or Sapphire. They can be brought into the game by trading.
Rare Pokemon that can be caught in firered are: Moltres, Zapdos, Articuno, Mewtwo, Raikou/Suicune/Entei (depends on which starter Pokemon you choose).
Entei Raikou
There are Eight. They are: Zapdos Moltres Articuno Entei Suicune Raikou Mewtwo Deoxys
By legendary wise then the legendary birds if you have not caught them yet, raikou/suicune/entei NOTE: for the legendary dogs AKA Raikou, suicune and entei it depends on which starter Pokemon you chose so if you chose bulbusaur you get entei, charmander gets you suicune and squirtle gets you raikou. NEED NATIONAL DEX.
it depends on which starter u chose. squirtle: raikou. bulbasaur: entei. charmander: suicune.
This is VERY debatable. Most say Mewtwo, Mew, Raikou, Entei, Suicune.