Watching cats falling off couches has turned into a worldwide pastime, thanks to the Internet.
Virginia Morell likes to watch animals, too, but not in quite the same way.
She is a science writer who has studied animal emotions, and she's featured in a new edition of PBS's "Animal Reunions" this week. Morell, who lives in the Ashland area, visits the Exchange studio to talk about what we get from our exploring and understanding animal emotions.