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 simplicity, answers should be in all lower cased letters.

Category: ON EXHIBIT 
Clue: The Chinese government, which controls all of these in the U.S., won't let a new one be named until it's 100 days old
giant pandas

Category: FINANCE HISTORY 
Clue: In the 19th c., selling stock you didn't yet own, hoping it would fall, was called selling this animal's skin
a bear

Category: LANGUAGES OF EUROPE 
Clue: A mixture of English & Spanish, Llanito is the language of this territory's 30,000 residents

gibraltar