Fur seals and flightless barnacle goose chicks fight to survive the challenges of infancy.

The moment when all animals must strike out on their own in search of independence.

Animals must find homes that provide shelter from the elements and a refuge from enemies.

To gain power an animal must find a way to rise through the ranks of its society.

David Attenborough explores the courtship displays of flame bowerbirds and pufferfish.

In this episode, animals attempt to rear their offspring.