Last Roar of the Taiga
Incredible documentary, very depressing, all about the fight over limited game and resources between humans and tigers in Siberia.
Contains gruesome footage of what remains of bodies of men who have been eaten by tigers (not much remained, just bits of skin stuck to the inside of their frozen clothes), dead tiger cubs (starvation), and a tigress trapped in a cellar being shot to death by angry villagers.
It also includes a very depressing interview with the mother of a Russian soldier just returned from Chechnya and who, despite the warnings that a man eating tiger was at large, insisted on going for a walk in the forest claiming that as he had survived Chechnya he would survive anything. He was wrong. His mother said "I hate tigers. They are vermin and I would be happy if they were all killed tomorrow". Her husband, the boy's father, hung himself in shame for not having gone out to kill the tiger before it ate his son.
There is a lot of really important food for thought in this documentary and, I won't include spoilers, but possibly the most exciting and remarkable ending to a documentary I've even seen.
Then there's Ultimate Enemies Lions and Elephants
Including remarkable footage of a pride of lions who have learned how to hunt full grown adult elephants. You have to admire the skills of the lions but seeing an adult elephant charging around terrified while 13 lions cling onto its back is pretty upsetting. not as upsetting as seeing the lions hunker down to dinner on the rump and flank of the elephant as the elephant waves it trunk around calling to its friends. The elephants are just too huge to be killed outright so they are eaten alive. For additional depression value the elephants' friends turn up at dawn to mourn their fallen comrade, or at least that's how it looks. They pick up the bones and caress them gently for hours.
The elephants have the advantage in the day because of their size but at night the lions have the advantage because the elephants have rubbish night vision, so every night the carnage starts again. (((elephants)))