Catherine de Lange, reporter
Elephants have been shown to cooperate in ways that were thought to be unique to primates.
In the video above, elephants were filmed as they were presented with an opportunity to get hold of some bananas. Each elephant in a pair had access to a rope attached to a platform containing bananas - if both elephants pull on their ropes at the same time, the platform moves towards them and they are rewarded with the snack. If only one pulls, the ropes come loose and the elephants miss out on the bananas.
Not only did the elephants pull together to get the snack, but if one of the elephants was released first it would wait for the other to arrive before attempting to use the system. As the video shows, however, one elephant still managed to find a way to cheat.
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