Are all animals' mouth cleaner than a human's?

Well, no dogs mouth is cleaner than a humans pretty darn sure. Do we eat from toilets and gross stuff like that? I didn't think so. Well, dogs do! Do we lick humans? I didn't think so. Well dogs do. Do we eat dead animals? NO! Dogs do that sometimes like the dog across the street from me. Plus, we brush our teeth and tongues, dogs don't do that unless their owner does it for them but not all the time does that happen. So, I don't think ANY dog in the world has a cleaner mouth than a human. Just what I believe, don't think I'm stupid.