Does your pet know when you are stressed? How dogs and cats pick up on changes in your behaviour
Sept 14, 2026, 14:55 IST
Can your pet tell when you are stressed?
Can your pet tell when you are stressed? Dogs and cats may notice changes in human behaviour, voice, body language and even smell. Research has found that dogs can distinguish odours associated with human psychological stress, while studies suggest cats can also respond differently to human emotional cues and stress-related scents. Your pet may react by staying closer, becoming more alert or changing its usual behaviour. However, this does not mean they understand exactly why you are stressed. Their response may simply reflect their ability to notice changes in you.
If you have ever had a stressful day and noticed your dog staying unusually close to you or your cat quietly watching you from across the room, you may have wondered whether your pet knows something is wrong. While animals cannot understand human stress in the same way we do, research suggests that dogs and cats can respond to changes in our behaviour, voice, body language and, in dogs, even our scent. This does not mean your pet can diagnose anxiety or know exactly why you are upset. However, they may notice that something about you is different and change their own behaviour in response.
Dogs have an exceptionally strong sense of smell, and research suggests that this may help them detect changes associated with human stress. A 2022 study published in PLOS ONE tested whether dogs could distinguish between human odour collected before and after a stressful mental arithmetic task. The researchers found that the dogs were able to discriminate between baseline samples and samples collected after people experienced psychological stress. The findings suggest that changes in breath and sweat can provide dogs with information about a person's stress state. But smell is probably not the only clue. Dogs also pay close attention to their owners' voices, movements, facial expressions and daily routines. If you become quieter, speak differently, move around more restlessly or behave differently from your usual self, your dog may notice these changes.
Some dogs may respond by coming closer, sitting beside their owner, following them around or seeking physical contact. Others may become more alert or even give their owner some space. The response can depend on the individual dog's personality, previous experiences and the situation. Research has also found connections between the stress levels of dogs and their owners, although this does not prove that one always directly causes the other. Scientists believe several factors, including shared environments and emotional interaction, may play a role.
![Cats notice changes too, but their reactions can be quieter]()
Cats may not always respond to human stress as openly as dogs do. A cat might not rush over when you are upset. Instead, it may watch you more closely, stay nearby, change its level of interaction or become more alert. Research suggests cats can respond to human emotional signals. A study published in 2020 found that cats showed different stress-related responses when exposed to human expressions of anger compared with happiness. The researchers concluded that cats appeared capable of perceiving the negative emotional quality of human signals.
However, this does not mean cats understand human emotions exactly as people do. Their responses are likely based on several cues rather than an understanding of the situation itself. Another study examining cats in stressful situations found that the presence of their owner could reduce stress-related behaviour in some cats. Around half of the cats studied showed what researchers described as a secure-base effect, suggesting that a familiar caregiver can provide a sense of security during unfamiliar or stressful situations.
![Your pet may know that something has changed, but not why]()
It is tempting to say that dogs and cats can "sense" exactly when we are anxious or sad, but the science is more nuanced. Your pet may notice changes in your smell, voice, facial expressions, movement, routine or level of interaction. They then respond according to their own temperament and past experiences. So, if your dog suddenly sits beside you during a difficult day or your cat stays close when you are unusually quiet, it may be responding to changes it has noticed in you. That does not necessarily mean it understands the reason behind your stress. For pet parents, the important thing is to pay attention to behaviour changes in both directions. If your own stress is affecting your routine, try to maintain your pet's usual feeding, exercise, play and rest schedule. A predictable environment can help animals feel secure. And if your pet suddenly becomes withdrawn, aggressive, unusually clingy or changes its eating, toileting or grooming habits, do not automatically assume it is reacting to your stress. Behavioural changes can also be signs of illness, pain or stress in the animal itself and may require advice from a veterinarian.
Dogs may pick up on your stress through scent and behaviour
Dogs have an exceptionally strong sense of smell, and research suggests that this may help them detect changes associated with human stress. A 2022 study published in PLOS ONE tested whether dogs could distinguish between human odour collected before and after a stressful mental arithmetic task. The researchers found that the dogs were able to discriminate between baseline samples and samples collected after people experienced psychological stress. The findings suggest that changes in breath and sweat can provide dogs with information about a person's stress state. But smell is probably not the only clue. Dogs also pay close attention to their owners' voices, movements, facial expressions and daily routines. If you become quieter, speak differently, move around more restlessly or behave differently from your usual self, your dog may notice these changes.
Some dogs may respond by coming closer, sitting beside their owner, following them around or seeking physical contact. Others may become more alert or even give their owner some space. The response can depend on the individual dog's personality, previous experiences and the situation. Research has also found connections between the stress levels of dogs and their owners, although this does not prove that one always directly causes the other. Scientists believe several factors, including shared environments and emotional interaction, may play a role.
Cats notice changes too, but their reactions can be quieter
Cats notice changes too, but their reactions can be quieter
Cats may not always respond to human stress as openly as dogs do. A cat might not rush over when you are upset. Instead, it may watch you more closely, stay nearby, change its level of interaction or become more alert. Research suggests cats can respond to human emotional signals. A study published in 2020 found that cats showed different stress-related responses when exposed to human expressions of anger compared with happiness. The researchers concluded that cats appeared capable of perceiving the negative emotional quality of human signals.
However, this does not mean cats understand human emotions exactly as people do. Their responses are likely based on several cues rather than an understanding of the situation itself. Another study examining cats in stressful situations found that the presence of their owner could reduce stress-related behaviour in some cats. Around half of the cats studied showed what researchers described as a secure-base effect, suggesting that a familiar caregiver can provide a sense of security during unfamiliar or stressful situations.
Your pet may know that something has changed, but not why
Your pet may know that something has changed, but not why
It is tempting to say that dogs and cats can "sense" exactly when we are anxious or sad, but the science is more nuanced. Your pet may notice changes in your smell, voice, facial expressions, movement, routine or level of interaction. They then respond according to their own temperament and past experiences. So, if your dog suddenly sits beside you during a difficult day or your cat stays close when you are unusually quiet, it may be responding to changes it has noticed in you. That does not necessarily mean it understands the reason behind your stress. For pet parents, the important thing is to pay attention to behaviour changes in both directions. If your own stress is affecting your routine, try to maintain your pet's usual feeding, exercise, play and rest schedule. A predictable environment can help animals feel secure. And if your pet suddenly becomes withdrawn, aggressive, unusually clingy or changes its eating, toileting or grooming habits, do not automatically assume it is reacting to your stress. Behavioural changes can also be signs of illness, pain or stress in the animal itself and may require advice from a veterinarian.