Some of history's most remarkable heroes had four legs, no idea they were famous, and a talent for doing exactly what nobody expected.
The Instagram page Animal Heroes World collects their stories: animals who found their way home across impossible distances, pets who stayed loyal long after the people they loved were gone, and companions who stepped in when someone was in danger. Each story is told in a short, simple post, and the page says every one is checked against published sources, with unsupported details corrected or removed.
Some of these stories made headlines around the world, while others are lesser-known moments that are just as moving. We've gathered some of the page's most memorable posts below.
