What is the cleanest thing In the world I heard it's a dogs mouth but I am not very sure about that ?
Not a dogs mouth. Have you ever seen the places they put there tongue?
A dog's mouth is no cleaner than a human's.
Dogs cats etc their mouths are full of bacteria and diseases google it plus it was in the news!
I would say freshly boiled water.
Come on now... Think about your question.
My dog eats poop, so I don't think a dogs mouth is the cleanest
SPF Room. Specific Pathogen Free. Inside of an autoclave another candidate for cleanest. Safer to be bit by dog then person as far as infection concerned.
A dogs mouth IS actually cleaner than a humans, but it's not the cleanest thing in the world.