I also don't agree with applying electrical shock to train a dog. Not just from a pain standpoint, but from a cardiology standpoint. The heart is basically a pump powered by an electrical impulse orginating in what's called the "SA node". This impulse causes the heart to contract or beat. Sometimes there are electrical conductivity problems in a heart that are not easily detectable and when you apply an electrical stimulus to the body from an outside source, it can aggravate an electrical conductivity problem of the heart - thus causing irregular heart rhythms. I realize it is not a large electrical stimulus; however, repeated electrical stimuli over time I would by wary of. |