They put a GoPro on a lion and watch it hunt down its prey. <iframe width="560" height="315" src="//www.youtube.com/embed/thNwNvvi48M" frameborder="0" allowfullscreen></iframe>
Gopros take some amazing videos. Bad camera angle, though, dude. Mount it on her head or in her mouth. Also, I feel bad for the poor deer. Such is nature, though. Sucks to hear its death screams.