What breed of horse was Whiskey?

Please provide me with more context! I need to know which "Whiskey" you are referring to. There are many horses named Whiskey, and without more information, I can't tell you what breed they are.

For example, are you talking about:

* A famous racehorse named Whiskey?

* A character in a book or movie named Whiskey?

* A horse you know personally named Whiskey?

Once you give me more information, I can help you find out the breed of Whiskey.