all 210 in platinum but you only have to see them
you can catch as many legendary Pokemon but only once unless you have it on the computer
ALL
the way to catch all legendary Pokemon in the Pokemon universe is lokk at the number they are in the pokedex then thro away that many masterballs you have to have the cheat where you get 999 masterballs to do it
I don't now but I believe that you can catch as many as you want when you encounter them.
you don't need to catch them just see all the Pokemon in the hoenn pokedex
5
over 9000
All that you want, because you only need to defeat elite four to get nationaal pokedex.
you can check the pokedex, it is in fiery path.... and many caves! Just check the pokedex, it's quicker.
2
In many ways, no. Fire has a national pokedex, alternate areas, and the chance of finding the legendary dogs!
The answer is no, dellibird is not a legendary Pokemon. If it is then there wouldn't be some many of them available in the wild and it would be a lot more difficult to catch