In Black/White:
- By trading with someone who owns it
- By migrating from Generation III
- By transferring from Generation IV
- By breeding with Ursaring
Not found in the wild normally
In Black/White 2:
- By trading with someone who owns it
- By migrating from Generation III
- By transferring from Generation IV
- By trading for it with Yancy
- By breeding with Ursaring
Not found in the wild normally
http://bulbapedia.bulbagarden.net/wiki/Teddiursa_(Pok%C3%A9mon)#Game_locations