with a poke ball no just kidding catch raikou with net ball entei ultra siucune ultra or level up your Pokemon to 40 depending on what type it is and try to use scary face and use quick ball the first time u meet it and prey
no
no.
None of the legendary dogs are available in Emerald you must obtain them from Firered, Leafgreen, or Pokemon Colosseum.
i dont think you can, you can get the dogs only by action replay
Ho-oh lugia celebi(with a gameshark)
catch them
Yes
Yes not fast at all
yes if you can find them
The legendary shiny dogs event
2
You can't. The legendary dogs didn't exist at the time yellow was released. Sorry.