Why, how, in what ways is love, affection, tenderness for "our smaller brothers" revealed to us? Maybe these feelings give rise to their repeatedly proven usefulness? In any book about dogs, you will find many examples of how much benefit dogs bring to humanity: they are pioneers in space, and sacrifice their lives to medical science, and save the wounded in war, and guard herds, and in the circus they know how to have fun, and catch criminals, and selflessly guard state borders, and much, much more, not to mention their irreplaceability on the hunt.