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flipper is smarter than people...(I saw the TV series)
why would he be so stupid to do that?

"The dolphins forcing themselves onto unwilling females, and killing the young, isn’t wrong. It is merely dolphins being dolphins.

Of course, when humans do such things, they are judged rightly as monsters. That is because we are exceptional."

https://evolutionnews.org/2016/02/dolphin_males_f/