Did you know that dogs and cats can SMELL our stress? When humans feel anxious, our bodies shift into “fight or flight” mode. Hormones like cortisol surge, our breathing changes, and even the smell of our sweat transforms. While these changes are subtle—if not invisible—to us, they light up like a neon sign for our four-legged friends.
THE SCIENCE BEHIND THE SNIFF
A 2022 study by Queen’s University in Belfast demonstrated that dogs were able to detect with 90%+ accuracy, the difference in sweat samples taken from a person under duress and those who were not: https://www.nbcwashington.com/news/national-international/dog-can-smell-when-were-stressed-out-new-study-shows/3170336/
Another study by the University of Bristol, published in Scientific Reports (7/22/24), centered around human stress and the effects on a dog’s learning and emotional state. 18 dogs were recruited to test their response to the smell of (unfamiliar) people who were exposed to both stressful and relaxed situations.
Study results suggest that dogs were more apt to demonstrate pessimistic behavior when exposed to the smell of human stress. For the complete details and study procedures, read the report: “The odour of an unfamiliar stressed or relaxed person affects dogs’ responses to a cognitive bias test” https://www.nature.com/articles/s41598-024-66147-1
It’s not so hard to believe when you compare a dog’s divine gift of 220-300 million olfactory receptors in their nose (vs human: 6 million). The actual stats vary, yet you get the drift of their super-power whiff, right? Cats, while less studied, have highly sensitive vomeronasal organs that help them pick up on pheromones and other stress-related signals.
A therapy cat “Oscar” is believed to have sensed death was coming based on a change in human smell as they approached end of life. While there is no scientific proof of Oscar’s special abilities, it was reported with anecdotal evidence provided by the nursing home staff where Oscar resided. Many Reddit users replied with similar stories to the 11/3/24 article on Snopes: https://www.snopes.com/fact-check/cat-predicted-deaths-nursing-home/
HOW IT WORKS
Stress activates the sympathetic nervous system, triggering the release of hormones like cortisol. These changes alter body odor in ways subtle to humans but obvious to animals with their powerful noses.
If an owner’s lifestyle or routines have changed, even slightly, their dog can both smell and sense the changes in body chemistry and emotions. Ergo: stress stinks and your pets can smell it!
WHAT PETS DO WITH THIS “DATA”
Here’s the heart-melter: many pets don’t just notice stress; they respond to it. Dogs may press closer or lean against you like a weighted blanket with fur. Cats might climb into your lap, meow insistently, or even shadow your steps more than usual. Of course, every animal is different – some may mirror your tension instead, becoming restless, pacing or even hiding when they sense something’s off.
WHY THIS MATTERS
Recognizing this incredible ability reminds us that our emotional wellbeing and our pets’ wellbeing are deeply connected. When we practice stress management, we’re not only helping ourselves but also creating a calmer environment for our beloved pets. It’s a two-way street—just as they soothe us, we can return the favor by staying mindful of how our moods affect them.
Next time your pup curls in extra close or your cat seems unusually clingy when life feels overwhelming, take it as a sign. They’re not just seeking attention – they’re responding to what they smell and feel from you. It’s their way of saying “I’ve got you”.
Most pet owners looking for private pet boarding or move-in pet care want to minimize the stress typically associated with pet resorts and kennels. This growing trend for more intimate pet care services has provided a wealth of opportunity for pet sitters across the U.S. A professional pet sitter should be able to provide a far more peaceful and entertaining experience for their client’s dogs.
PRACTICAL TIPS FOR PET SITTERS
For pet sitters, this science offers an extra layer of insight into the care you provide:
- Read the Room (and the Pet): A pet that’s pacing, whining, or hiding when you arrive might be picking up on their owner’s stress or absence. Approach gently and give them space to settle.
- Bring Calm Energy: Animals are emotional sponges. A pet sitter who enters the home calmly and confidently helps set the tone for a relaxed visit.
- Comfort Tools: Keep familiar routines—favorite walks, feeding times, or snuggle spots. These predictable cues reassure pets who may already be unsettled by their owner’s absence.
- Use Positive Reinforcement: Redirect anxious energy with games, gentle play, or treat puzzles. It not only distracts but also turns stress into something positive.
- Communicate with Owners: If you notice unusual clinginess, withdrawal, or behavior changes, share your observations. Owners may not realize their stress at home is trickling down to their pets.
For a related article about 23 common stress signals for dogs and how to calm them please read this incredibly informative piece from dogclinic.com https://www.thedogclinic.com/signs-of-stress
The Association of Pet Professionals is on a mission to help pet sitters reduce the stress in their lives with valuable education, expert training and courses, relevant business fundamentals and so much more! We keep it real and affordable (only $10/month with no long-term contract expectations). Join us to turn your passion for animals into profit! associationofpetprofessionals.com/join-us/
Have a stress-free day and warm wishes for keeping it that way as often as possible!