How is dog mouth is cleaner than human?

yes

No

That is an old wives tale. Many people believe that a dog's mouth is cleaner than a human's, but recent tests say they are not.

Yes, a dogs mouth is cleaner than a human's....Because a dog has special bacterias that keeps it clean even though a dog licks it's butt and eat random things!!!!!There bacteria is different from...

No, that statement is an old wives' tale. A dog's mouth is not cleaner than a human's mouth.