In this second and last episode of the BBC documentary, Liz Bonnin and cameraman Max Hug-Williams return to the snowy Russian Far East forests. During this trip they uncover a problem: only a few hundred 'snow tigers' remain in the wild and breeding females are in particularly short supply.
Max is following a female tiger called Varvarra to see if she has new cubs, while Liz searches for a female called Princess who has gone missing. The team rescue an orphaned tiger cub, but have they found him in time?
A remarkable and emotional journey into the hidden world of the Siberian tiger, revealing for the first time intimate footage of one of the planet's most powerful and mysterious big cats.
Read more on WCS Snow Tiger conservation programs in China and in Russia.
Read more about the backstage of this documentary: http://www.bbc.co.uk/blogs/tv/posts/Operation-Snow-Tiger