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Originally Posted by Iginla
Dogs do not have cleaner mouths than humans, that's a myth.
Dogs do however have something in their saliva that kills bacteria and helps heal wounds faster, but their mouths are not cleaner than a human's mouth.
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The sample collected from Adam's mouth had much more bacterial growth than the sample collected from Lulu the dog. Jamie suggested, however, that the bacteria from the dog may be more potent.
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Regardless, cleaner, dirtier, more potent, less potent; a person using a plate that was licked by a dog, but cleaned properly is no worse than using a fork, spoon, glass or anything that was used by hundreds of different people
I love dogs, I have 3 of them, (6 in my lifetime) and I could see how having dogs in a restaurant could be a problem for some dogs (Whining, barking, howling) or them crapping and peeing on the floor (Unless it's cleaned right away), but licking plates should be the least of the issues