In a quiet corner of Black Beauty Ranch, on a stone plinth beneath a maple tree, there’s an oval etching of a man and a burro. The man is Cleveland Amory, author and founder of the Fund for Animals, and the burro is Friendly, one of the first animals to call the sanctuary home. The two met in 1980...

For more than two decades, the Humane Society of the United States has welcomed interns hoping to expand and enhance their professional skillset—and broaden their animal welfare knowledge in the process. But the opportunity to fight for all animals hasn’t always been convenient or inclusive; our...