Fifty house cats in the United States were given collar cameras that took a photo every 15 minutes.
The results put a digital dent in some human theories about catnapping.
Based on the photos, about 22 percent of the cats' time was spent looking out of windows, 12 percent was used to interact with other family pets and 8 percent was spent climbing on chairs or kitty condos. Just 6 percent of their hours were spent sleeping.
"What surprised me was how active the cats were. I believed my three cats were sleeping during the day," said Jill Villarreal, an animal behaviour scientist who collected the data for a cat food company.
The 777 photos studied by Villarreal showed the cats looking at a television, computer, DVDs or other media 6 percent of the time and hiding under tables 6 percent of the time.
Coming in at 5 percent was playing with toys; eating or looking at food finished at 4 percent.
Will the cats get movie cameras next?
"We are in the think tank now," Villarreal said.
