I don't know if it is sadder that I did it, or that you noticed in a picture of a cute dog!
It is a manual shock collar, because he doesn't really bark. He's a whimperer, though, and is pretty darn intrigued with the cats. He's got a training harness for walks and the collar for around the house, and we have heard good things about it from a few people. It has a tone function, too, so we don't have to shock him (he actually reacts really well to the tone). We're just trying to get him well-socialized since we do a lot of things with other people, other dogs, and cats. We do need to get him an invisible fence collar,t hough, so when we go to visit our friends who have them, he can just be let loose.