Laura Fritz's cats will play with her iPad. When they do, something happens. Her fat feline loses the urge to eat. Her scaredy-cat loses his fear. And her youngest just loses interest.
Every cat computer app, no matter the maker, has something for felines to electronically track, stalk or hunt. They often are mice, bugs or laser dots.
"Cats are attracted to things that move. And that is the 'magic' for most of the apps," said Dr. Bonnie Beaver. She is the executive director of the AmericanCollege of Veterinary Behaviorists.
"The motion in most apps is jerky and quick. Much like an insect," she said.
Every cat is different. But if they're like two of Fritz's, they will love pawing the screen to catch critters. That breaks anxious Maxie out of his shell. And gives hefty Mr. Brutus a way to exercise, said Fritz. She lives in Waltham, Massachusetts. But cats also may be like her youngest, Pansy Rose, who couldn't care less.
Maxie and Brutus work together on the app "Paint for Cats." They chase a mouse and leave a trail of splattered paint. That is where they have pawed, rubbed, jumped or made other marks with their movements. Many cat owners see the results as art. The owners like to share it on social media. The app allows people to email the creations.
It is among three popular apps created by T.J. Fuller and Nate Murray's Los Angeles company Hiccup. The company also features a mouse-chasing game. It's called "Game for Cats." And there's a monster-crushing game dubbed "Catzilla."
There are several cat apps on the market. "Pocket Pond" for Android tablets allows cats to follow fish or dragonflies with their paws. Friskies' "Cat Fishing" taps into the fish theme for Android and Apple devices.
Some people worry about damage to the devices. Claws won't hurt the screen, said Fuller. But nobody has tested for teeth.
Karen Rittmuller lives in Salem, Massachusetts. She found a problem with a bite. She downloaded "Game for Cats." Her pet will only stalk, pounce and bite the iPad. So she took it away.
"I did not want the device ruined or her hurt from biting too hard," Rittmuller said.
Even cats at shelters are joining the tech trend. The SPCA Los Angeles received a couple of used tablets two years ago. So the shelter decided to see if any of their homeless cats were budding artists.
Two of them, dubbed Pawblo Picasso and Frida Catlo, created what looked like fuzzy circles. The SPCA turned the "art" into sellable notecards.
Critical thinking challenge: Why are tablet-based apps better for cats that desktop-based programs?