Public service is venerated in many ways. But it’s not often that we’re able to recognize the efforts of our four-legged friends who have full-time professional gigs serving the American public.
Jessi was 7 years old when she began working for the Forest Service and 28 years old when she retired. For most federal employees, it’s an unlikely age span for a gig. But Jessi is a mule. And for 21 years, she packed lumber, trail-building supplies, crosscut saws, and even explosives into the Ashley National Forest for federal packer Ken Reed.
I was in elementary school when Jessi was born and in my junior year of high school when she first began packing for the Forest Service. I was likely doodling horses in the margins of my school notes at both times in my life. But now, in my 30s, our lives have converged.
Jessi is my first mule. And in Ashley National Forest’s recent Facebook post celebrating her retirement, thousands have joined in on wishing Jessi well in her hopefully long and healthy retirement.
A Quick History of Mules, Horses, and the Forest Service

When the United States Forest Service first formed in 1905, the majority of its employees were four-legged. Thousands of horses and mules were drafted into service, where they were used for trail-building, pack supply operations, wildfire assistance, and more.
Over 115 years, not much has changed for horses and mules in the Forest Service. They continue to pack necessities and aid in trail-building and maintenance around the country. In fact, if you’ve ever hiked, cross-country skied, mountain biked, or backpacked in our National Forests and Wilderness Areas, you’re likely on trails built and maintained by virtue of these animals.
Mules in particular are near-perfect pack animals for the long term. A cross between a horse and a donkey, mules exemplify what scientists call “hybrid vigor.” Mules tend to be healthier and stronger than their equine brethren, and they often outlive most horses by nearly a decade. And keeping both horses and mules in shape over a lifetime — as with humans — can substantially prolong their productive years.
As a result, healthy mules can be ridden and packed into their mid-30s, and they occasionally live into their early 40s. In 2019, the world’s oldest living mule died at a whopping 56 years of age.
Jessi’s Life of Public Service in the High Uintas of Utah
