Priced at $40 USD, the Fire TV Stick is a bit more expensive than Google's $35 Chromecast, but $10 cheaper than the already-affordable Roku Streaming Stick âlike other typical set-top boxes, the standard Fire TV is available for $100.
The precise question was: Is a dog's mouth cleaner than a human's? The answer to that is no, too, and basically for the reasons you've already cited. As we all know, dogs aren't particularly fussy about where they put their tongues or what goes into their mouths.
Overall, dogs are smarter than cats, actually by quite a bit. However, cats have many more brain cells dedicated to sensory nerves (rather than used for storing information like dogs). This means that even though dogs are much more intelligent than cats, cats are able to hear, smell, and see much better than dogs.