This cat loves to hang her leg like this while chilling. How cool is that.
Cats love to lounge on an elevated space. This gives them a vantage point to oversee any danger approaching plus elevations are generally cleaner and drier as well.
Cats can relax and sleep in these kind of cozy places for many hours at a time. If you have cats in your house ensure you create ample elevated spaces for them to lounge in.