The video, presented by Kate from MinuteEarth, discusses the historical misclassification of dinosaurs based on appearance alone, likening it to grouping humans by superficial traits. It explains how modern taxonomy uses DNA and fossil evidence to determine relationships, showing that animals like whales and hippos, or sloths and anteaters, are more closely related than they appear. The video highlights that dinosaurs are part of diverse families, some related to birds and others to snakes, and traces human ancestry back to the dimetrodon.

What new insight or understanding did you gain from this video?