Panzee the chimp is a remarkable creature who has learned the value of trade. Here she is challenged to pick tokens to trade for food. If she really is as intelligent as her handlers believe she is, she should choose the tokens for all her favourite foods first. So is she up to the task? Subscribe: http://bit.ly/BBCEarthSub Taken from Extraordinary Animals Series 2. WATCH MORE: New on Earth: https://bit.ly/2M3La96 Oceanscapes: https://bit.ly/2Hmd2kZ Wild Thailand: https://bit.ly/2kR7lmh Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of astounding, entertaining, thought-provoking and educational natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this. This is a commercial channel from BBC Studios. Service & Feedback https://www.bbcstudios.com/contact/contact-us/