After filming an unusual attack, filmmaker Reinhard "Leo" Kuenkel and world-renowned lion expert Craig Packer explore the dark relationship between lions and cheetahs. This Episode is being listed under Season 2010 and 2011 due to the fact the only place there is a listing for all these episodes seems to be on Amazon, where they have 2 items with separate episode listings in them: Season 2010 and Season 2013. This item will be duplicated in Season 2011 simply due to the fact that it is obvious that this episode aired in 2011 and not 2010 based on the first aired date.