Penguin Siblings Race For Food | Growing Up Wild | BBC Earth

In the harsh climate of Antarctica, Adelie penguin siblings take the term 'sibling rivalry' to a new level, their survival depends on it. Pitting the pair against each other will show the parents who is the fittest and most likely to make it in the wild.

Natural World: Growing Up Wild (2015)
A look at the challenges young animals face, from their first steps through to leaving home. For any animal, the early days of life are often the most difficult. Finding food, avoiding predators and generally learning life's essential skills is tough. However, with a little parental guidance growing up can be an adventure. By following some special tiger cubs in India, an adolescent mountain gorilla in Uganda and two nervous polar bear cubs in the high Arctic, the trials and tribulations of growing up wild are revealed.

Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.