Planet Earth was a popular television series broadcasted a decade back in 2006. Planet Earth II is a sequel produced by BBC One to the highly successful British television series. The first episode of Planet Earth II featured a huge penguin colony and a chill swimming sloth but 'survival of the fittest' scenario steals the show of the documentary. David Attenborough's fan did something really interesting with the video of baby iguana attack by snakes. Read on!