I watched a documentary on a family of these people. They are primarily Llama farmers who live in the arid desert regions of Mongolia. When they are young they go out and search for an eagle's nest and grab a baby eagle and then raise it and teach it to hunt for them. Plus every year they have a competition of who's eagle is the best, and who is the best trainer. It was a really good documentary, showing the life of these farmers.
A little side note and one that is related to the title of the documentary (which I have forgotten the name of) is that one of the Llama's gives birth, but will NOT let it's offspring suckle, so they have to hand feed this baby llama, but it still isnt enough so they call for this "medicine man" to come out. And basically the medicine man plays this type of stringed instrument while a lady sings this prayer, and as soon as they start the adult Llama has a very noticable reaction, and then starts to cry, tears and all. Then it lets its baby start to suckle and everything ends happy. There is something amazing going on there, and it has to seen to be believed. I tried to find something on youtube showing it, but nada. Either way, these people are definately some badass motherfuckers, where they live and what they do to survive, is something I doubt many of us would be able to do for more than a few days.