The room fills with the scent of sweat and musk as the bears, their bodies glistening with pre-cum and spit, lose themselves in primal rutting. The bottom bear's ass stretches obscenely around the invading cock, his hole gaping when his partner withdraws, only to clamp down again as he thrusts back in. The top bear's heavy balls swing back and forth, slapping against the bottom's taint, as he fucks him with wild abandon. They grunt and groan, their animalistic cries filling the air, until finally, they pull out, their cocks spewing thick, creamy loads all over the bottom bear's back and ass, marking him as their territory.