What Are Animals Saying? - S1.E1

The series premiere examines animal communication. Some animals demonstrate they can learn human language—like Chaser the dog, who recognizes hundreds of words, and Kanzi the gorilla, who understands some English spoken in context. Included: researchers who are deciphering how animals share information critical to their survival—from a cacophony of ultrasonic bat squeaks to spider thumps and mice mating songs.