You can get them as your starter, but that is the only legitimate way to get one in game without trading.
oshawott snivy tepig
So far, in Japan, he has Pikachu, Oshawott, Tepig, Tranquill, Snivy, Scraggy, and Swadloon. In the USA he has Pikachu, Oshawott, Tepig, Snivy, and Pidove.
The Starter Pokémon in Pokémon Black 2 and Pokémon White 2 are Oshawott, Tepig and Snivy.
The first Pokemon is Snivy, Tepig. Oshawott.
If you picked Tepig the only way to get them is through a trade. If you can connect to the GTS try breeding your Tepig/Pignite/Emboar and trading the new Tepig for a Snivy or an Oshawott.
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.
Once you start it is the stronger starter type pokemon that you have meaning if you pick snivy it is tepig, oshawott - snivy, tepig - oshawott. then a dark type called purloin. then his starter evolves and he has a liepard and tranquil to unfezant.
Tepig- Fire Oshawott- Water Snivy- Grass
Most people chose Oshawott or Tepig, Snivy is fine too. I chose Tepig. My friend chose Oshawott. If I got White Version, I would choose Snivy.
snivy, tepig, and oshawott
Oshawott, Tepig, and Snivy
Snivy (Grass) Oshawott (Water) Tepig (Fire)