Culture is a social system or set of behaviours that is passed down through the generations, and which differs from that seen in other populations of the same species. So for instance, all killer whales are carnivorous, so that is not cultural. But only certain pods of killer whales beach themselves to catch seals, and the necessary skills are taught to young whales by their mother, so that is cultural. Distinct cultures have been observed in many primates and some birds as well as in whales and dolphins.

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BBC News about Culture

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