Dog
01/06/2026
Most dog lovers are probably familiar with the experience. You've had a tough day and feel upset, stressed, or emotionally drained – until suddenly, your pet approaches you, lays by your side, or puts their head on your lap. When such moments come around, it is natural for most people to start questioning themselves whether it's possible for dogs to really tell when we are unhappy. It turns out that this is one of the most interesting behavioral inquiries our clients often make on mybestie.gr, and the scientific approach might reveal some surprising answers. Dogs do not understand our sadness in the same way people do, but the latest scientific studies suggest that pets can perceive our emotional state from our tone of voice, facial expressions, body language, and even our scent. In simpler terms, dogs might not comprehend the reasons behind our sadness but surely notice its signs.
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Over the course of tens of thousands of years, dogs have lived alongside humans. In doing so, they've become adept at observing human behavior.
It has been proven that dogs can identify:
In fact, some experts even go so far as to suggest that the ability to combine several emotional cues from a human is one of the things dogs excel at. This was done out of necessity: dogs that could communicate well with people had a higher chance of survival.
To our surprise, yes!
It is important to note that dogs perceive their surroundings primarily using their sense of smell. When a person feels stressed or sad, chemical changes occur within his body, just as they do for humans when they are frightened or upset. There have been scientific studies demonstrating how dogs can detect these changes in chemistry due to different emotional states. This can help us understand how dogs act toward anxious or distressed owners.
When people feel sad, many dogs respond in a way that involves becoming more calm, affectionate, or physical.
According to behavioral specialists, possible causes for such a response include:
As social beings, dogs tend to react to any emotional changes among members of their “social pack” by remaining close or engaging in some activity. It is interesting to note that dogs comfort people automatically, regardless of whether they are trained to do so.
Is it empathy?
And this is where science becomes fascinating. The question on whether dogs feel real empathy is open to scientific discussion. Nevertheless, recent findings prove that our four-legged friends do exhibit what is known as emotional contagion, which means they can reflect and react to the emotions of others.
For instance:
They may not grasp human emotions rationally, but dogs are very aware of our emotional and behavioral energy.
One factor which makes dogs unique is the emotional connection that they have with humans.
In situations where dogs engage in positive behaviors with their owners, there is a significant release of the chemical known as the “bonding hormone” or “love hormone,” also referred to as oxytocin. This is the same bonding hormone released during parent-child interactions. The biochemical connection could be part of the reason why dogs seem to be emotionally present at critical times.
According to science, even though dogs might not comprehend the feeling of sadness the same way humans do, they are experts in picking up on emotions through vocal cues, postures, behavior, and even scents. Sometimes, their response is quite simply:
Sticking by us.