Chris Packham looks at social intelligence in the animal kingdom and finds out why it is that, for animals, being together means being clever. He looks at how lions hunt in teams and each hold a very specific position, how vampire bats build trust and donor networks through grooming, and how wild wolves first became domesticated and transformed into man's best friend.

Originally released by BBC Worldwide Learning, 2021. Streaming video file encoded with permission for digital streaming by Infobase on April 30, 2021.