DogWatch® Hidden Fences keep your pets safe. The Hidden Fence creates a secure boundary to keep your pets safely in your yard and away from places you don't want them, such as gardens, swimming pools and driveways. With a Hidden Fence, your pets can run, play and exercise so they stay happy and healthy. Hidden Fences are also commonly known as wireless fences, underground fences, invisible fences, and electric fences for dogs.