It's estimated that a grizzly's scent-detecting area is 100 times larger than a human's, making its sense of smell seven times better than a bloodhound's. In fact, it's likely that the animal's keen sense of smell led to a fatal grizzly attack on a hunter field-dressing the elk he'd just shot in Montana in 2001. As grizzly populations in the northern Rocky Mountains grow, hunter-bear conflicts have become a genuine concern, especially in the fall, when bears are also hunting for wild protein to prepare their bodies for hibernation. Bear encounters near big game carcasses are frequent enough that Montana Fish, Wildlife & Parks requires bison hunters to relocate carcasses and gut piles at least 200 yards from homes, roads, and trails, to decrease the chance of human-bear interactions. However, Ebinger stressed that his work isn't meant to affect hunting regulations.