Could a bear
Devour that much of a human body so quickly?
Unless the girl was meant to be running for a while, before she turned back, it seemed like the guys body went from fresh kill to semi skeleton in a very small amount of time. I get a bear has powerful arms and claws and can rend flesh away fairly quickly - but it's mouth isn't that big and the body appeared more eaten than broken? The whole scene just threw me a bit.
Other than that, it was a great film.