Secret life of the cat: Ginger
12 June 2013 Last updated at 10:18 BST
The daily routines of dozens of domestic cats have been revealed in a study for the BBC's Horizon programme.
As part of the largest ever research project into domestic cat behaviour, the Horizon team - aided by the Royal Veterinary College and Lincoln and Bristol Universities - tracked dozens of pet cats over several 24-hour periods using specially-designed collar GPS devices and tiny "cat cams".
Watch one of the cats, Ginger, confront a rival cat.