Yes, you could build a small catio in the yard. Or, you could enclose the entire yard and let your kitties roam free!,Some cats are perfectly content to spend their days enjoying the comfort that indoor life offers. For others, the call of the wild remains strong. How can you safely allow your indoor cat outside? An easy solution is to create a catio for your feline. While completely enclosed, these clever structures allow Kitty to enjoy a little fresh air (and bird stalking). “They can experience the seasons, but they’re safe,” says Ingrid Johnson, a certified cat behavior consultant in Marietta, Georgia. “It can be a pretty exciting place for a cat to be.” Catios come in all shapes and sizes. While some are modest enclosures, others—like the one Johnson custom-built for her lucky cats—are much more ambitious. From penthouse-worthy rooftop hangouts to chic kitty lounges, these extreme catios are almost any feline’s dream come true.