There were no humans killing animals in this movie like that directly, unless you count our effect on their habitat and the climate. The shots where animals were killed were shown as a part of nature. A pack of wolves taking down a caribou, a gazelle being taken down by a Cheetah, an Elephant attacked by a Lion pride, a seal getting chomped by a Great White, a wounded Polar Bear from his unsuccesful hunt of Walrus... It was all very tasteful, in my opinion, with very little blood and no guts or gore that I can remember.