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.
Dogs love to eat everything. And yes, fluoride is the main reason we do not use human toothpaste. Fluoride is good for teeth, but bad if you ingest in large amount. That is also why you and me do not eat the toothpaste and we rinse our mouth after we brush our teeth.