Humans have long been fascinated by the idea of communicating with other species — not just teaching animals to mimic human words, but truly understanding their calls or cries, and interpreting their meaning. In recent years, new technologies and research are getting us closer to that point. So what are scientists learning about the way animals' minds work — what they think about, care about, and want us to understand? On this episode, we explore animal communication — from their ability to speak our language, to our ability to understand theirs. We hear stories about what viral videos of "talking" dogs and cats are teaching scientists, the hidden meanings behind whale songs and dolphin whistles, and how machine learning is decoding the oinks and squeals of pigs.