at what age...

[muppeteer]

should you start brushing a dogs teeth?

[crisgal]

as soon as he's old enough to hold the toothbrush!

[edukes]

from a puppy so he'll get used to it, or you'll find that if you leave till he's older he'll never let you do it
you can even get doggy toothpaste sausage flavor, I not joking

[alfieblue]

Our pup has a Denta-Styx daily aswell. It's an excel product to keep teeth and gums healthy - he fairly enjoys them too!