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Dog Hair 101: How filthy is it, really? [Unforgettable Study]

 Reviewed 30 April 2019 share-a-picture Or go to discussion?join-the-discussion dogphoto
Apr 302019

When it comes to dog hair, there's as much controversy how pleasant or infectious dog coat is as there's controversy how often you should brush your dog - or if at all.


The newest study that benefits from the huge base population of 18 men and 30 dogs undertaken by

dog-hair-cleaner-than-bearded-menthe beardless Professor Andreas Gutzeit at the Hirslanden Clinic in the grandest nation of all (Switzerland) concluded that female dog owners need not worry about their pooch's filthy dog hair as long as they bear a bearded male partner.

Promptly countless female dog owners called me on the phone and told me: "But then, why would I bear a bearded male partner? I value My German Shepherd instead!"

This was the moment I realized I had to be more serious. mrgreen

So, what was REALLY found?

As the chief correspondent

Afghan Hound CorrespondentTHE Afghan Hound

of arguably the world's most esteemed newspaper THE Metro* reported a couple of days ago: "Bearded men carry more germs than dogs".

dogs-mri-scanReference is made to Dr Gutzeit, the leading Swiss Radiologist who earlier pushed 18 men and 30 dogs into an MRI with the aim to find out if the hospital's costly MRI could be used for both dogs and men.

And indeed, Dr Gutzeit did find out: Overall dogs left the MRI cleaner behind than men.

It was not reported what the men were doing inside the MRI and so it was concluded "it must be" the men's beards that left so many more lethal bacteria behind.

Dog Hair: Implications

This was the historical day when:

  • Swiss clinics decided to give preference to dogs over men both in emergency treatment and bedcare
  • Women decided to dump their bearded partners (and shave their legs)
  • and bearded men decided to wash their beard even less often to get more often a push into an MRI.

Now you know all about this most important DOG STUDY of the year.

Except the footnote:

* THE Metro "must" be considered the world's most esteemed newspaper as it boasts with more fake or real social shares than the world' 5 Most Read Newspapers combined: Daily Mail, The Guardian, The New York Times, People's Daily, and The Washington Post.

None of which is in China because the few Chinese people cannot read of course.

PS: You know Tim Carter always researches THE SOURCE of any study discussed on The Cynology Hub MyGermanShepherd.Org.

To find THE SOURCE of this study proved extremely difficult. But Tim being THE SHEPHERD of the herd that report on dog matters succeeded, as it should be for THE SHEPHERD.


Would it be safe to have a dog in the MRI scanner before your own examination?

A multicenter study to establish hygiene facts related to dogs and men

Authors: Andreas Gutzeit, Frank Steffen, Juri Gutzeit, Junus Gutzeit, Sebastian Kos, Stephan Pfister, Livia Berlinger, Matthias Anderegg, Carolin Reischauer, Ilona Funke, Johannes M. Froehlich, Dow-Mu Koh, Christina Orasch.

[You see there: The entire Gutzeit family was involved in this study]

Published in: European Radiology, February 2019, Volume 29, Issue 2, pp 527–534



To determine whether it would be hygienic to evaluate dogs and humans in the same MRI scanner.


We compared the bacterial load in colony-forming units (CFU) of human-pathogenic microorganisms in specimens taken from 18 men and 30 dogs. In addition, we compared the extent of bacterial contamination of an MRI scanner shared by dogs and humans with two other MRI scanners used exclusively by humans.


Our study shows a significantly higher bacterial load in specimens taken from men’s beards compared with dogs’ fur (p = 0.036). All of the men (18/18) showed high microbial counts, whereas only 23/30 dogs had high microbial counts and 7 dogs moderate microbial counts.

Furthermore, human-pathogenic microorganisms were more frequently found in human beards (7/18) than in dog fur (4/30), although this difference did not reach statistical significance (p = 0.074).

More microbes were found in human oral cavities than in dog oral cavities (p < 0.001).

After MRI of dogs, routine scanner disinfection was undertaken and the CFU found in specimens isolated from the MRI scanning table and receiver coils showed significantly lower bacteria count compared with “human” MRI scanners (p < 0.05).


Our study shows that bearded men harbour significantly higher burden of microbes and more human-pathogenic strains than dogs.

As the MRI scanner used for both dogs and humans was routinely cleaned after animal scanning, there was substantially lower bacterial load compared with scanners used exclusively for humans.

Key points

  • Bearded men harbour significantly more microbes than dogs.
  • Dogs are no risk to humans if they use the same MRI.
  • Deficits in hospital hygiene are a relevant risk for patients.


#Hygiene #CrossInfection #Disinfection #AnimalExperiments



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