My daughter gives their doggie CO in her food daily. I don't know if she brushes her teeth or lets the vet but this link talks about CO and brushing pets teeth.
And the 12 yr old doggie has a beautiful coat and I'm certain it's the CO.
I have been making CO toothpaste for myself for a few years and the
dental improvement and Fresher Breath is remarkable. I make my own CO Toothpaste.
7 Ways to Remedy Bad Dog Breath