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Dog lovers would have let their furry friends lick them at least once or twice.
It's the perfect way to let man's best friend show their affection for you, but a few dog experts have warned owners to not make this a frequent gesture.
According to them, our canine companions can actually carry some pretty harmful diseases in their saliva that could be potentially deadly to humans!
Dog expert Marty Becker told The Sun that it's not that hard for dogs to contract nasty bacteria.
"All you have to do is look, watch, smell...
“They raid the garbage can.
"You know, we give each other a peck on the cheek when we say hello, they give each other a peck on the rear end.”
John Oxford, professor of virology and bacteriology at the Queen Mary University in London agreed with Marty and said that there are many ways that dogs can contaminate their owners.
“It is not just what is carried in saliva.
“Dogs spend half their life with their noses in nasty corners or hovering over dog droppings so their muzzles are full of bacteria, viruses and germs of all sorts.”
Children are most vulnerable to the harmful bacteria that dogs can carry.
A lot of the time, if you've been infected, you'll have the symptoms that you would have if you got a common cold or a similar illness.
In these cases, it's best to seek medical attention so you are able to identify the infection early.
So maybe letting your dog lick you isn't the best idea...