How Does Mty Dog Masterbate How Do You Train Your Dog To Bark Once?

How do you train your dog to bark once? - how does mty dog masterbate

I have a Jack Russell and a lot of barking when people come to the door. I do not really like it, but MTY father she wants a guard dog and tried to give an alternative, but not heard () such as a bell. So I teach my dog to bark once, when people come in the door and then do not want more. I look at the offers without citronella bark collar because you can keep your dog barks, but they are expensive because they are my last resort.
Please help!