yes.
In Pokemon Crystal version, you catch it at the Lake of Rage.
You could get a shiny Pokemon for crystal but you need luck to catch one ("_")
From the sprout tower at night.
Bulbasaur is a starter for the Johto Region, so you cant catch him in the Sinnoh.
Bulbasaur wanted to go with him.
Crystal is a GEN:2 game while Latios is a GEN:3 pokemon. (so no)
You must choose it as your starter if not you need to have red or yellow trade you one or receive one from Pokemon stadium as a Pokemon present.
you do not catch it . you can bulbasaur when you get it from proff oak
you can not catch bulbasaur you have to pick him as your starter Pokemon
you cant but but if you can wait till august 8 2011 it will bet is Pokemon shade of darkness version and in Pokemon crystal light version
up your bum