Dogs have a natural instinct to comfort their human companions, a trait that has been bred into them over generations. When they see someone in distress, they may feel compelled to offer support and comfort. However, the complexities of human emotions and unhappiness can be baffling to them, as they cannot fully understand our issues and struggles.

Humans often live in a world of abundance and freedom, able to access food and go outside at their leisure. In contrast, dogs are creatures that rely on humans for their needs and are attuned to the emotional states of their owners. The contrast between their simple desires and our complex lives highlights the puzzling nature of human sadness from a dog's perspective.