"That particular male cat was not getting food from humans, to my knowledge, but somehow it survived out there amidst coyotes and foxes," Horn said. "It crossed every street in the area where it was trapped. (It navigated) stoplights, parking lots. We found it denning under a softball field during a game."
The owned cats had significantly smaller territories and tended to stay close to home. The mean home range for pet cats in the study was less than two hectares (4.9 acres).
"Still, some of the cat owners were very surprised to learn that their cats were going that far," Horn said. "That's a lot of backyards."
The pet cats managed this despite being asleep or in low activity 97 percent of the time. On average, they spent only 3 percent of their time engaged in highly active pursuits, such as running or stalking prey, the researchers reported. The un-owned cats were highly active 14 percent of the time.
"The un-owned cats have to find food to survive, and their activity is significantly greater than the owned cats throughout the day and throughout the year, especially in winter," Horn said. "These un-owned cats have to search harder to find food to create the (body) heat that they need to survive."
The cats also differed in the types of territories they used throughout the year. Pet cats randomly wandered in different habitats, but un-owned cats had seasonal habits. In winter, feral cats stayed closer to urban areas than expected. And throughout the year they spent a good amount of time in grasslands, including a restored prairie.
Most of the cats in the study stayed within about 300 meters of human structures, said co-author Nohra Mateus-Pinilla, a wildlife veterinary epidemiologist at the Illinois Natural History Survey at Illinois.'/>"/>
|Contact: Diana Yates, Life Sciences Editor|
University of Illinois at Urbana-Champaign