Not surprisingly, your dog knows when you are sick due to their amazing sense of smell - and a few other factors we will explore below.
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Signs of a Dog Knowing You are Sick
Your dog may also be a little calmer in your presence, be less demanding of walks and playtime, and they may even pull less or be less excited on their walk if they know you are not feeling your best. This is because they know you are tired and your energy is much lower than it normally is.
They pick up on your cues and adjust their behavior accordingly. Your dog wants to make you feel better, comfort you, and lower your stress levels when you're sick and this is how they attempt to do just that.
- Wag tail
- Whale eye
- Are less energetic and demanding
- Staying close to your side
- Laying and cuddling with you a lot
History of Dogs Sensing People are Sick
Dogs are also able to detect sickness in fellow dog companions, as well. If you have ever seen a dog intently licking a spot on another dog and then find there is a sore or scrape there, this is because the dog can sense it and they are trying to help the affected dog.
However, it was not until relatively recently that science has been able to confirm how dogs are able to sense illness and that they can indeed sense illness in humans and other animals. Dogs are now specifically trained to detect illnesses in humans. Some dogs are trained to actually detect the early stages of cancer in humans and not just minor illnesses like a cold or the flu.
Science Behind Dogs Sensing When You're Sick
When we are sick, our happiness receptors and hormones like serotonin, dopamine, and oxytocin reduce. Dogs can pick up on these small changes as well and they may even know you are getting sick before you become aware! Your lack of energy will also be picked up by your dog as well. They are able to sense your emotions and pick up on facial cues that let them know you are not yourself.
Training Dogs to Sense Sickness
However, special dogs are trained to sense and detect more serious illnesses, diseases, and cancers. These kinds of dogs are known as medical detection dogs and they go through similar training as a bomb or drug-sniffing dog would.
Take diabetes for instance. Dogs are trained to sniff out diabetes patients in a very special way. These dogs are rewarded when they are able to detect a low blood sugar level in specific samples. This teaches them to just pick up on that specific scent and none of the other scents they come in contact with during certain situations.
For illnesses like cancers, dogs will work in a laboratory-based environment and work with blood samples to detect whether or not a blood sample is likely to test positive for a certain type of cancer. Again, these dogs are rewarded when they correctly identify a sample as having the scent marker for that sickness, disease, or cancer.
Dogs also have the ability to train to detect a heart attack before it happens, seizures, behavioral changes, and more.
How to React if Your Dog Dog Sense You're Sick:
Give them lots of love and thanks back with belly rubs.
Their presence will make you feel better, so take advantage of that.
Accept their love and affection.