Danielle Tepper had always loved dolphins. When she went on vacation to Hawai'i, she knew she had to see them firsthand. Tepper—now a senior editor at the Humane Society of the United States—wanted to do it ethically, so she avoided captive dolphin attractions. Instead, she booked an excursion to...

It was the shot heard around the world. An American trophy hunter shot and severely injured Cecil with an arrow after he was lured outside Hwange National Park in Zimbabwe with elephant carcass bait. About 10 hours later, the hunting party tracked him down. A second arrow ended Cecil’s life. The...