Their world, however, has changed. No longer can they see past the barrier that keeps them in the yard. There are no neighbors (dogs, cats, and people) to watch their every move. They can no longer see out to the street to watch the cars and pedestrians go by. They are limited to using their sense of sound and smell to identify something past the fence. Those senses are strong, so the barrier I wanted to decrease barking does not exist. BUT it has been limited, so the backyard is now a quieter world.
They have the squirrels and the occasional chipmunk to keep them happy. They can still chase birds who are daft enough to land in the yard to rest. They are happy, they are safe, and I am very happy!