How to Use “No” in Dog Training
After positive reinforcement training, we begin with a starmark or prong training collar. In this second phase, the word “no.” is introduced.

For instance, suppose you trained your dog to be accountable and commanded him to sit. He begins to sit (his body language indicates so), but he gets distracted.

You would now say “no.” If your dog obeys you, praise him. If not, repeat the command and correct it.

Illustrated it would be:

“Rex,” “sit” (tried but failed), “no,” “sit” (correction added), “good boy” (praised because he obeyed).

Another instance would be the dog initially obeying “sit” but then breaking.

In that case, say “no” and praise when he obeys; or command (followed by punishment) after saying “no.”

That would look like this:

“Rex, sit” (he sat), good boy (praised because he obeyed), “no” (because he breaks), “sit” (correction added), “good boy” (praised because he obeyed).