The popular PBS Series Born Wild: The First Days of Life looks at how the first few hours and days of a wild animals life are often their most taxing and developmental. From harsh elements and the threat of predators to (sometimes) lethal sibling rivalry and starvation, it’s not easy out there for the cute and cuddly.

In this episode the crew documents the first few days of a group of lions cubs and their introduction to the pride after their initial isolated nursing period with their mother. During this introduction, male lions often kills cubs they do not recognise as being from their bloodline whilst older siblings give them a torrid initiation. No wonder lions are so tough…