Results indicated that not only can dogs detect Covid faster, but they can also do so in a non-intrusive manner – so no need to swab your throat or nose
Dogs can detect Covid-19 faster and more accurately than a PCR test, a new study shows.
Researchers looked at the ability of canines to recognise the virus and its variants, even when they are obscured by other viruses, like those from common colds and flu.
More than 400 scientists from over 30 countries contributed to the study as well as 147 scent dogs, according to the findings published in the Journal of Osteopathic Medicine.
After analysing many studies covering both field and clinical experiments, Professor Dickey and Junqueira found that dogs who are trained to sniff out scents are “as effective and often more effective” than antigen tests.
A total of 53 dogs were trained to sniff out Covid scents, while 37 were not and scientists found that the dogs that were not trained were in some cases “slightly superior” to those that were pre-trained.
“The previously untrained dogs have the advantage that they are not as prone to indicating on scents other than the Covid–19 associated scent,” the paper said.
The results indicated that not only can dogs detect Covid faster, but they can also do so in a non-intrusive manner. This means you won’t need to put a swab in your throat or nose.
How can dogs detect the virus?
This essentially comes down to the dog’s highly evolved nose with its ability to sense out smells quicker.
Dogs possess up to 300 million olfactory receptors in their noses, compared to about six million in humans. And the part of a dog’s brain that is devoted to analysing smells is about “40 times greater” than humans. Canines also have ‘neophilia’, which means they are attracted to new and interesting odours
And so, with all these enhancements, dogs can detect very low concentrations of odours associated with Covid infections.
“They can detect the equivalent of one drop of an odorous substance in 10.5 Olympic-sized swimming pools,” Professor Dickey said. “For perspective, this is about three orders of magnitude better than with scientific instrumentation.”
Scientists also found that in some cases, the animals were also able to detect the virus in pre-symptomatic and asymptomatic patients, “whose viral load was too low for conventional tests to work.”
Professor Dickey has said that dogs can also differentiate Covid and its different variants in the presence of other respiratory viruses. This included the common cold or flu.
“They’re much more effective. In fact, one of the authors that we quote in the paper commented that the RT-PCR test is not the gold standard anymore. It’s the dog. And they’re so quick,” he added. “They can give you the yes or no within seconds if they’re directly smelling you.”
How was the study conducted to see if dogs can really detect Covid-19?
In some studies, the dogs gave a person a quick sniff, sitting down to see if the person has Covid. In another study, the dog was given a sweat sample to smell for a few minutes.
The press release has said that scent dogs, such as beagles, basset hounds and coonhounds are the ideal candidates for sniffing out the virus, given their “natural tendencies to rely on odours to relate to the world.”
But the studies which the researchers analysed showed a variety of dogs were up for the challenge and were able to sniff out the Covid odour. With a few weeks of training, puppies, older dogs, purebred and mixed breeds, both male and female were able to sniff such odours out and “all performed admirably,” the Eureka Alert press release said.
Although there has been success with dogs detecting such viruses, researchers believe there are still many challenges with using dogs for medical diagnoses.
“There’s quite a bit of research, but it’s still considered by many as a kind of a curiosity,” said Professor Dickey.
In conclusion, Professor Dickey and Junqueira said after reviewing the studies, believe that scent dogs deserve “their place as a serious diagnostic methodology that could be particularly useful during future pandemics, potentially as part of rapid routine health screenings in public spaces.”
“Perhaps, most importantly, we argue that the impressive international quality and quantity of COVID scent dog research described in our paper for the first time, demonstrates that medical scent dogs are finally ready for a host of mainstream medical applications,” they added.
Sad Puppy Is Separated from ‘Mother’ Cow Who Raised Him. Their Reunion Is Nothing Short of Beautiful.
‘Rookie’ cried loudly as if to say: “Please don’t separate us…”
Cue the sentimental music and get your tissues ready because this one is a tear-jerker. It has been proven over and over that animals have personalities, feelings, and emotions, just like humans do. Quite often, animals have more empathy than humans do.
One family noticed that their energetic little dog Rookie had formed a powerful friendship and bond with one of the cows on their farm. The cow was like the puppy’s mother – she would nuzzle him and groom him. He would run around and play with the cow, and he could often be found sitting or sleeping on her back.
The unlikely duo formed a powerful bond. Despite their size and species difference, they considered each other family. They did just about everything together, until one day they were separated. The cow’s owner couldn’t afford to take care of the cow, so he decided to sell her.
Rookie watched as his friend was led out of the barn. He was visibly distraught, and tears welled up in his eyes. He stood in the empty stall and howled miserably. Rookie’s cries are heartbreaking.
Rookie was beside himself with grief. He howled and barked, and you could see the despair in his eyes.
As the cow was led away, she heard little Rookie’s howling and began to moo in response. Rookie listened to the familiar voice and took off running in the direction of the sound. His paws flew down the town’s street in search of his friend. Despite his owner’s call, the only voice Rookie heard was the cow’s.
To Rookie’s joy, he located the cow in a barn across town. In relief and pure joy, Rookie jumped all over the cow and licked her. Unfortunately, Rookie’s owner came and carried him back home. Rookie desperately whined and howled as he was separated from his friend once again.
Separated from his family, Rookie became very depressed and refused to eat. The sorrow on the poor pup’s face is heart-wrenching as he stands in the empty stall where he and his friend had spent so much time together.
With his head down and tail between his legs, Rookie sadly started to walk away. Suddenly, a head appeared in the barn stall’s doorway behind him – it was his cow! The family decided that they would figure out how to afford the cow since Rookie was so attached to her.
When the cow mooed, Rookie’s head whipped around in shock – there stood his friend! He couldn’t contain his excitement and joy. The reunion was so heartwarming. He didn’t want to be separated from the cow that raised him and showed him, love, treated him like her own.
This incredible bond and display of affection between Rookie and his cow are so touching. You must have a heart of stone if this doesn’t move you. A family is a family pure and simple, no matter who you are.
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