From someone who has seen it.

I feel obligated to inform you moviegoers that this is simply not true. ... Last week, I attended an advanced screening of The Revenant, scheduled for theatrical release January 8, and, while admittedly had to pee the entire time, was completely engrossed in the bear attack sequence — not because it involved any sort of bestiality ... but because the bear, an incredible work of CGI, was so convincing as it mauled DiCaprio’s neck, crushed his spine, gnawed into his backside, and tossed him around the woodlands as if our A-lister were a mere bearded Raggedy Andy. But, again, there was no rape in the sequence whatsoever.