Chimp Learns to Trade | Extraordinary Animals | BBC Earth
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…
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Smart Pigs vs Kids | Extraordinary Animals | BBC Earth
Understanding a reflection in a mirror takes a child years to grasp, this piglet tested got it in a few hours! Who will fair best in a series of tests…
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