Everyone’s favourite sea creature may look adorable but behind those cute goofy expressions lie raging homicidal tendencies. While the majority of the animal kingdom only kills for food or in self-defence, dolphins appear to harbour murderous urges unconnected to any need or threat.

They have been known to use extreme aggression to harm, and even kill, their own young. And while there have been no cases of them harming humans – yet – you might want to knock swimming with dolphins off your bucket list.

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