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: U.S. ENDANGERED SPECIES 
Clue: It's not only the chinook; the sockeye species of this fish is endangered also

A: salmon
****
Q: Category: WHICH U.S. CABINET DEPARTMENT? 
Clue: The Federal Bureau of Prisons

A: justice
****
Q: Category: ON THE GO 
Clue: Old locomotives had this pointed grill in front of the engine to remove obstacles from the tracks

A:
cowcatchers
****