Estes gajos nunca me enganaram
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However, the capacity to distinguish the name itself (the content) from the sound may mean that dolphins do more than that. It may mean one could call another one by using its name. And it may even mean that two dolphins could speak about a third referring to it by its name. The capacity of discerning the modulation from the sound is a necessary condition for such a communication. But if they actually do such things still remains to be seen. However, one could ask what this capacity is good for if not for calling each other of maybe even for talking about third parties. So, do dolphins gossip? We don't know yet.