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.
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Question: Category: CURRENT EXPRESSIONS 
Clue: If you're engaging in wishful thinking, you may want to perform this type of "check"

Answer: a reality check


Question: Category: ALL GOD'S CRITTERS 
Clue: The barn species of this bird is sometimes called monkey-faced due to its simian features

Answer: owl


Question: Category: NATURE 
Clue: A chameleon can use this organ, almost as long as its body, to catch birds

Answer:
tongue