human
My dog keeps barking at the mailman. What can I do to get him to stop?
assistant
You could try teaching your dog a “leave it” command, and then reinforcing that with treats when he does obey. You could also try distracting your dog from the mailman by playing with him or giving him something else to focus on. Finally, you might consider using a citronella spray or other deterrents to discourage your dog from barking.