An interesting documentary about cats where in BBC Horizon discovers what cats are up to once they leave their house and roam around. The experiment is done with 50 cats from a village in surrey and all the cats are tagged with GPS collars so their movements are recorded day and night. While they hunt and protect their territory and patrol the garden fences. Some of the cats are wearing a developed cat-cam to give us a small peak in their world. It’s a very interesting documentary to watch!