Is the most fearsome sea predator a type of Dolphin?

 What makes Dolphins' brains different than ours? How fast can Dolphins swim? How smart and friendly are Dolphins really?

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Hey SmartyFans, The Trusty Narrator AKA Jerry Kolber was recently on The Literacy View podcast! LISTEN to it here: https://podcasts.apple.com/us/podcast/the-literacy-view/id1614519794 Or, WATCH it here: https://youtu.be/ZZ1P__owtMY?si=XcrWJ29EThF_Ku-p