It is always good to get your dog used to a toothbrush… and you can start with just putting the gel (or nothing at all) on your finger and rubbing over the teeth and gums...
Getting a baby puppy is a lot more fun.. (for the puppy...ggg) they will accept pretty easy.. but "chew, chew, chew"... which is OK by me.... they get used to someone putting hands/fingers in their mouth.
And for those of you that are considering showing... two tips... mouth exam is important.. so the more you get them used to people looking at their bite the better... and for those of your with males... used to people touching/grabbing (and some judges are NOT with soft hands) their private parts... as making sure they have two testicles is part of the judges responsibility. Those of you with pups... start now.. every day... practice showing the bite and having others look at the bite... and check for testicles..