Quick Tumblr Thread On How Dolphins Started

As we've all had hammered into our heads from an early age, dolphins and whales are mammals. Put extremely simply, dolphins started when some kind of weird pig/rat/wolf/hippo creature figured land was a bad move and there were more opportunities back in the water. That in-between thing looks like a failed science experiment. Nature has produced some strange things, like this cold-blooded freak-devil cave goat. For some mythological biology, here's Tumblr's take on dragon evolution.