How do you get ninetales in Pokemon Black?

You can't get a Ninetales in Pokemon Black. Ninetales is the evolved form of Vulpix, a Fire-type Pokemon, and Vulpix is not found in Pokemon Black.

However, you can get Ninetales in Pokemon White.

Here's how:

1. Find Vulpix: You can find Vulpix in the Twist Mountain, specifically on Route 15, Route 16, and Route 17.

2. Train Vulpix: Level up your Vulpix to level 36.

3. Evolve Vulpix: Once Vulpix reaches level 36, it will evolve into Ninetales.

Good luck catching and evolving your own Ninetales!