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.

Chris discovers the cleverest animal travellers and how they find their way, from deer with mental maps, blue whales planning routes, and dung beetles navigating by the stars.