Comparing the effects of shock collars with other electrical stimulation products, Dr. Dieter Klein has stated that, "Modern devices ... are in a range in which normally no organic damage is being inflicted. The electric properties and performances of the modern low current remote stimulation devices ... are comparable to the electric stimulation devices used in human medicine. Organic damage, as a direct impact of the applied current, can be excluded.” Shock of this nature carries little energy (on the order of millijoules, 1 millijoule = 0.001 ). "At 0.914 joules the electric muscle stimulation and contractions a human receives from an 'abdominal energizer' fitness product is exponentially stronger — more than 1,724 times stronger— than the impulse a dog receives from a pet containment collar set at its highest level.".
And Tom, do your dogs still wear shock collars?
When I was doing my research into shock collars, I came across a study by Steiss (2007). This study shows that there was no significant difference between spray collars and shock collars in preventing dog barking.
The Science of Dog Training: Is It Okay To Use A Shock Collar?
I have trained several dogs and have never considered using a shock collar till now. I’m at the end of my rope. I can’t leave the house or get a decent night’s sleep. I rescued a 1yo Weimaraner, a beautiful boy who was injured, abused, and mistreated by a former owner. He is a wonderful animal who deserves a great home.
7 Dos and Don'ts of Using a Dog Shock Collar | eBay