We have 2, very large dogs (Golden Danes). The installation of this fence was very tedious, but worth it. The instructions were easy to follow and when we used it with the dogs, they immediately understood what was happening.One of the things I really appreciated was the care the instructions had for our animals. They very clearly state how to safely warm your pet into an electric fence. The instructions often reminded me of how to take it carefully, not to do actual harm to my dogs.Thank you!