Mule deer have very keen senses. Because the eyes of a mule deer are located on the sides of their head, mule deer can see a 310 degree view around themselves. Mule deer can detect the slightest movement up to eighteen hundred feet away, and biologists estimate that a mule deer’s sense of smell is up to 1,000 times stronger than a human’s. Our Burt Brothers quiz question tonight is. According to biologists, how far can a mule deer smell a human scent? the answer when KSL Outdoors, powered by Ford returns to Colorado.