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I thought it is just an accident. But... after seeing few BREAKOUT by our panda in the zoo, I am wondering they are quite clever and they have been trying to go back to nature for a looooong time.
"Dont you people stop laughing at me? "
"But, my dear panda, you cant survive in current nature environment without the help of human, as your gene is not strong enough, according to the research by Professor Somebody."
"I dont care, I want to go back to the baboon forest--my hometown!"