First you can easily find suicune, he is in a tower in ercuteak city.
For the other two,(I dont know if this is gonna work in your game, but it did work on mine) this is just very easy if you encountered it but failed(fleeing pokemon). But i encountered mine by using gameshark then encounter a low level version of the legendary dog then turn off the gameshark.
First look in your pokedex, and check where it is go after it, you can use fly to the nearest city to it, then check the pokedex normally it transfered to another location the same happens when you enter and exit buildings.
Just keep going after it 7 to 10 times just keep checking you pokedex and at the 7 to 10th time, check your pokedex and follow the legendary dog, if you were there already and it hasnt moved, its a success.....
Caution:Once you encountered it and it fled you have to do it all over..
And if you were planning to get in and out of a building until the legendary dog is near where you are, DONT DO IT! it'll just make it more than 7 to 10 times before it stops tranferring...
;483;
For the other two,(I dont know if this is gonna work in your game, but it did work on mine) this is just very easy if you encountered it but failed(fleeing pokemon). But i encountered mine by using gameshark then encounter a low level version of the legendary dog then turn off the gameshark.
First look in your pokedex, and check where it is go after it, you can use fly to the nearest city to it, then check the pokedex normally it transfered to another location the same happens when you enter and exit buildings.
Just keep going after it 7 to 10 times just keep checking you pokedex and at the 7 to 10th time, check your pokedex and follow the legendary dog, if you were there already and it hasnt moved, its a success.....
Caution:Once you encountered it and it fled you have to do it all over..
And if you were planning to get in and out of a building until the legendary dog is near where you are, DONT DO IT! it'll just make it more than 7 to 10 times before it stops tranferring...
;483;