I am a huge fan however this series did not deliver. Was very average with information and the gaps in their lines of stories was disappointing. It was as if you watched a normal costibg documentary. This information on these animals are readily availble in other documentaries. The penguins had some great clips and information but again only small portions. The lions and tigers had nothing new to offer. Not worth your time and i was bored. I am a true animal documentary lover and this was truly disappointing.