Mule deer are the West's signature big-game animal — named for the oversized ears that stand straight out from a blocky head. A mature buck runs 150 to 300 pounds with a forked-and-forked-again antler structure (each main beam splits into two, then each of those splits again, so a typical mature buck is a four-by-four) that's distinct from the single main beam of a whitetail. The tail is short, white, and tipped in black, and the rump patch is white. They move with a stiff-legged four-footed bound called stotting — all four hooves leave the ground at once — which lets them cover broken ground a coyote can't follow through.
They're crepuscular feeders: bed in heavy cover through the heat of the day, work feeding edges at dawn and dusk, and shift bedding sites with the wind. The rut peaks in November when bucks abandon caution and chase does across open country in daylight — the one stretch of the year a mature buck is reliably catchable on foot. They eat browse-heavy: bitterbrush, sage, mountain mahogany, serviceberry. Population trends have run flat to declining across much of the West for two decades, with habitat fragmentation, drought, and chronic wasting disease all in the mix.