According to Drudge Report:
The explicit moment from Oscar winning director Alejandro Inarritu has caused maximum controversy in early screenings. Some in the audience escaped to the exits when the Wolf of Wall Street met the Grizzly of Yellowstone. The story of rural survivalism and revenge reaches new violent levels for a mainstream film.
The bear flips Leo over and thrusts and thrusts during the explicit mauling.
“He is raped — twice!”
Not to be outdone, DiCaprio rips open a horse and sleeps naked in its carcass!