Koko, the female Western Lowland gorilla who gained worldwide notoriety for her ability to speak sign language and articulate complex human emotions, turned 45 years of age this week. Koko has lived since 1974 at The Gorilla Foundation headquarters in California (USA), and understands approximately 1,000 words of sign language and over 2,000 words of spoken English. For more, visit http://buff.ly/29oyRRV
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