Technically no ones tongues are clean. Not even humans. Living beings whole entire body are filled with all types of germs and bacteria! So that question actually doesnt make sense. Youre welcome!
Dog
no
Horse
Well, a fly is the 4th most cleanest insect since they are constintly cleaning them selves,believe it or not. A cockoroach is the cleanest ANIMAL/INSECT in the world.
Your tongue.
Pigs are considered the cleanest domesticated mammals, they will designate one corner for feces, this corner is far away from the food troughs.
Pakistan is the cleanest country in the world
I belive a cat is the second cleanest animal,becuse it licks itself every day
A pig
yes dogs dose have the cleanest tough in the world
No but it is one cleanest and clearest lakes in the world
Yes Tasmania is said to have the cleanest air in the world because of the low population