Only from the life of a dog. How dogs cry when they were loved and then abandoned.
Probably nothing compares to the feeling of abandonment and loneliness. And it doesn’t matter who was abandoned, a person or an animal, it hurts equally any living creature. This dog was sent to a shelter. Look how much sadness and tears are in these eyes. Did you know that dogs can cry too? We are responsible for those we have tamed.
A hackneyed and well-known phrase, however, not many take it seriously.