Murchison, TEXAS—A group of exotic wild animals who spent their lives at a deplorable roadside zoo in Canada are now receiving proper care and living their happily-ever-after at the 1,400-acre Black Beauty Ranch, a sanctuary that is part of the Humane Society of the United States. The animals...

At Black Beauty Ranch, titles like “caregiver” and “maintenance technician” don’t do the people who hold them justice, and they don’t capture the dozens of unique tasks the team carries out every day: figuring out how to get pine sap off a goat’s horn (rub it with peanut oil), learning how to “drag”...