Nope only by trade or breeding.
Actually, you don't have to catch oshawott you can get it as a starter in pokemon black and white. Starters: Tepig Snivy or Oshawott.
No, but if you have a Ditto, and others have an evolution of Oshawott (Oshawott, Dewott, or Samurott), then you could trade a pokemon for that evolution of Oshawott. Then you must leave Ditto and the evolution of Oshawott in the daycare together for a while. Then talk to the day care man and he will give you the Oshawott egg.
at the beginning when u chose your Pokemon or you can use a code
it evolves at level 64 into a hydreigon
No, it is exclusive to Pokemon White. Where you would catch Rufflet in White, you catch Vullaby in Black.
In Pokemon black you catch RESHIRAM and TORNADUS In Pokemon white you catch ZEKROM and THUNDERUS Sources : myself
You can't catch it in Black, but you can catch it in White. In the White Forest.
You can not catch Braviary. You have to catch Rufflet in Pokemon White and evolve it.
Black and White Episode 3 A Sandile Gusher of Change Episode 662
It is exclusive to Pokemon White, you can't catch it in Pokemon Black. You would need to trade with someone who has white.
If you want to you can choose oshawott as a starter and a water Pokemon but if you have a different starter you can catch a tympole in the outer pinwheel forest outside nacrene city
you cant catch rayquaza in Pokemon black