You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For consistency, answers should be in all lower cased letters.

Q: Category: WY WYOMING? 
Clue: This large prairie animal is featured in white silhouette on the state flag

A: buffalo
****
Q: Category: PRESIDENTIAL PETS 
Clue: Charlie, one of the Kennedys' dogs, was a distant offspring of the dog that played this role in "The Thin Man"

A: asta
****
Q: Category: TRANSPORTATION 
Clue: Roofed cars on a freight train, or a roll of 12 in a dice game

A:
boxcars
****