We have a huge Great Dane who, because she is so big, was scaring the baby. The baby would get knocked over (on accident) or whipped in the face by the tail. We were thinking of getting rid of our Dane but decided to try this instead. Now, our dog will place (stay) until we release her, can go to the park without her leash on, and will stay away from the baby when we say "off." The 25lb baby now thinks she is in charge of the 130lb dog.... and the dog agrees. It is expensive but well worth the money for us.