BBC made a progam of this research.
Ever wondered what your cat spends its time doing when you're not around? Where do our purring pets go when they disappear through the cat flap? Armed with GPS tracking devices and micro-cameras, a team from BBC Two's Horizon programme in collaboration with the Royal Veterinary College set off to a Surrey village to find out. Discover more by clicking on the cat characters below.
It is pretty neat for any cat owner.http://www.bbc.co.uk/news/science-environment-22567526