Some animals cooperate to survive. Some animals even put the welfare of the group above their own reproductive potential. This episode explains how cooperation works in the animal world. Cockroaches live in large multigenerational families; bonobos use sex for conflict resolutions; ants are eusocial, meaning they do whatever it takes to serve and protect the colony; meerkats balance the internal struggle with their need for cooperation.

pt. 1. Social Animals: Cockroaches -- pt. 2. Social Animals: Bonobos -- pt. 3. Social Animals: Ants -- pt. 4. Social Animals: Meerkats.